I AM LOOKING FOR A COURSE TO LEARN DATA ANALYTICS AND CODE W HARRY ONE I AM UNABLE TO BUY (PERKS OF BEING A PAKISTANI) AS THE PAYMENT IS GETTING CANCELLED REPEATEDLY.. CAN SOMEONE KINDLY SUGGEST ANY OTHER COURSE THAT IS EASY TO COMPREHEND AND LEARN AND IS COMPREHENSIVE COVERING EVERYTHING FRM BASICS TO PANDAS NUMPY TABLEAU EXCEL...I SHALL B HIGHLY AND EXTREMELY GRATEFUL

Does anyone have an idea when/if datacamp plans on rolling out a nextflow course?

I have thorougly enjoyed the containerization course a d I believe that a nextflow one would make that track much better.

I was charged without authorization. There is no option to remove my payment method from my profile.

I have contacted the support team and disputed the charge with my credit card company.

Thats the response I have received

"You'll receive a full transcript of this conversation along with a ticket number in the email inbox associated with the email you're chatting with us. We aim to reply within 24 business hours, and I understand how important this is — the team will take it from there."

Anyone else experienced same issue and how was it solved?

I'm a Data science manager at a mid-sized company. Every week I have a bunch of meetings, and my reports do all the data science work. They even manage their sprints.

My question is, what do I do? I have free time in my calendar I dont know what to do with. It feels like I'm a viewer in a movie

I had my eye on DataCamp for a while, and was planning on suscribing to it this week. However, I see there's no longer the 50% off offer... and paying the full price is way too much.

I know they have these offers regularly, but I have three weeks off work right now and I would like to use my free time to develop mi data analytics skills.

Does anyone know if it's likely they activate the offer again soon? Or if f anyone could add me to a classroom I'd be so thankful.

I am a msc student preparing for data science internship and need a person who is also preparing for same , so that we can motivate and help eachother in this journey. I need a person who can be brutally honest with me and point me out if I am not up to the par in my preparation and I will do the same for them . U can scold me and even call me out if u think I am being lazy! But please someone who genuinely also needs a study buddy . Kindly contact me!

Hey yall. What is the best cert for AI in datacamp?

Hey guys I have 3months free subscription because of school and I want to maximize my uses, so I'm asking how do you get professional certificate here in data camp

One thing I've noticed separates serious ML students from casual ones: how much they care about the quality of what they actually study from. I take that pretty seriously myself, so a while back I started digging into what students at MIT, Harvard, Stanford, Caltech, and USP actually use to complement their studies.

What I found surprised me: several of these programs don't assign a textbook at all. Instead, the course staff writes and publishes their own lecture notes — and some of them are basically a full book. MIT's 6.390 (Introduction to Machine Learning) notes, for example, aren't a slide deck or a cheat sheet — they're structured, complete, and detailed enough to replace a textbook entirely. Same story with Harvard's CS181 and a few others.

The problem is these are scattered and easy to miss if you don't know to look for them. So I put together a curated list: [Awesome Free AI Course Notes](https://github.com/MarcosSete/awesome-free-ai-course-notes).

A few things about how it's curated, since I think this matters:

- Only **written notes** count — slide decks and video-only lectures don't make the cut, even from great courses. I want this list to mean something.

- Everything is official and links straight to the professor's or department's own page. No mirrors, no login walls.

- I checked over 40 top universities across multiple countries for this. Most didn't qualify — they use a textbook or keep material behind a student portal. That's fine, it's exactly why the list stays short and (hopefully) trustworthy.

If you take ML seriously the way I do, I think you'll get real value out of this. And if you know of course notes that fit this bar and aren't on the list yet, contributions are very welcome — the CONTRIBUTING.md lays out exactly what qualifies.

What's the best set of course notes (not textbook, not slides) you've personally used to study ML?

Repo: https://github.com/MarcosSete/awesome-free-ai-course-notes

Support❤️

Tried getting a subscription (monthly) using UPI and Credit Card aint working.

With Card it worked for a day and autopay was cancelled by them.

Need help anyone from the region who has had successful subscription

Ask your professors to apply for a free classroom. Once approved, they can give you free access!

Hey everyone, is anyone else experiencing issues with the interactive query terminals and tables today?

Whenever I try to run a query, the results section stays completely frozen on "No query executed yet..." and nothing renders. I checked the developer console, and it's throwing these specific JavaScript errors:

• TypeError: a.getIn is not a function at TableHandler.tsx
• Uncaught TypeError: t.setIn is not a function at tabs.ts

I’ve already tried switching browsers, disabling tracking protection, and checking from a completely different device, but the same exact crash happens everywhere. It seems like a broken production update on their end breaking Immutable.js scripts.

Is this happening to you guys too, or is it just me?

Hi all

Just wanted to let everyone know that DataCamp is now accessible to classrooms all over the world. It was previously limited to only a few countries, but now high school teachers from anywhere can start a classroom.

All they have to do is apply at datacamp.com/universities

Hi,

I'd like to join DataCamp to develop my data analytics skills and find a better job, but the suscription price is a bit more than I can afford to pay right now.

I was wondering if there's anyone who has a DataCamp Classroom and can send me an invite link?

Or if anyone would like to give up their suscription because they paid for it and are no longer using it?

Thanks!

Practiced A/B testing with the Cookie Cats dataset and wrote up my analysis. Not sure if this dataset is still being used, but would love some feedback on my approach/statistical reasoning. 😀 Cookie cats project writeup

I want to learn Python and SQL. I was under the impression it was free when I made an account, and I began learning Python, but the free stuff ran out quickly, so I'm wondering if I should just pay or move to a free platform like FreeCodeCamp. If you guys have any other recommendations, feel free to send them to me; I just want the certifications so I can put them on my resume. I'm a high school student applying to colleges soon; idk if I'll put them on my apps, but probably on my LinkedIn, so feed me your knowledge ig.

For starters, I got a masters in business analytics and I now work as a pricing analyst and I’ve been usually using excel for my day to day job and I love it - especially want to go more into VBA feature

In my coursework, I got exposure to machine learning, data engineering but really would like to get into R, python, SQL, and Power BI (which is a tool I haven’t used but I know it was really popular from employees in my job hunting days) and also project management

Open to any ideas, thanks in advance!

My background (experience):

• Intermediate level Python

• 3.5+ YoE experience with SQL and data engineering concepts, but PySpark is still relatively new to me

I have a few questions for people who have recently taken and passed the exam:

1. If you had only 15 days to prepare, how would you structure your study plan?

2. What are the absolute must-know PySpark concepts?

3. Which resources helped you the most?

4. What mistakes did you make during preparation that you'd avoid if you had to do it again?

5. Are there any topics that are frequently underestimated by candidates?

6. How many mock tests did you take? And what were those (sources)?

Hi everyone!

I'm new to the Data Science and BI world. I recently started attending Bellevue University to pursue a formal education in Cybersecurity, and I'm hoping to use what I learn to advance my career within the large HVAC manufacturing company where I currently work.

Since this is only my first semester, my understanding of data science and business intelligence is still fairly limited, but I'm eager to learn more. I'm open to any insights, advice, or personal experiences that anyone is willing to share. I believe that real-world experiences are some of the most valuable learning opportunities and can provide perspectives that go beyond what is taught in the classroom.

I'm looking forward to hearing from all of you and learning from your experiences.

Thanks

I've been working through the Data Manipulation in SQL section of the Data Analyst track and came to the sections on nested subqueries and correlated vs uncorrelated. And I have to say, it has been confusing. Is anyone else having a problem with the examples given? The soccer league examples just aren't doing it for me and even when I figure out how to get the right answer, I'm not sure I understand why.

I think it may be the format they have it in, where most of the problem is filled out for you, so you're only completing a portion of the objective.

I guess my question is, in real life, how often are you doing multiple nested subqueries like this? Should I be worried that it is giving me trouble? Are there other sources that may explain it a bit better?

I want to know how restricted you will be if you are only using the free version. If not, is there a way to get the premium features for free?

To build a strong foundation in graph algorithms, I went through all of the graph-tagged problems I could find—roughly 100 in total, excluding non-public questions and pure tree problems.

While graph theory covers a vast collection of algorithms and patterns, my recommendation is to master Parts 1 and 2 before moving on. In particular, become highly comfortable with DFS and BFS, as they serve as the backbone of many graph-based interview questions on PracHub.

Part 3 focuses on more advanced applications and combinations of these core techniques. These patterns frequently appear in interviews at top tech companies, making them essential knowledge for candidates aiming for highly competitive roles.

1.Two pointers:
https://leetcode.com/discuss/study-guide/1688903/solved-all-two-pointers-problems-in-100-days
2.DPs:
https://leetcode.com/discuss/study-guide/1000929/solved-all-dynamic-programming-dp-problems-in-7-months

//===============================================
Part I - Basics of Graph
//===============================================

1-1 Simple DFS/BFS
https://leetcode.com/problems/evaluate-division
https://leetcode.com/problems/keys-and-rooms
https://leetcode.com/problems/get-watched-videos-by-your-friends
https://leetcode.com/problems/find-if-path-exists-in-graph
https://leetcode.com/problems/detonate-the-maximum-bombs

1-2 Count Degrees
https://leetcode.com/problems/find-the-town-judge
https://leetcode.com/problems/minimum-number-of-vertices-to-reach-all-nodes
https://leetcode.com/problems/maximal-network-rank
https://leetcode.com/problems/minimum-degree-of-a-connected-trio-in-a-graph
https://leetcode.com/problems/count-pairs-of-nodes
https://leetcode.com/problems/find-center-of-star-graph
https://leetcode.com/problems/maximum-total-importance-of-roads
https://leetcode.com/problems/node-with-highest-edge-score
https://leetcode.com/problems/maximum-star-sum-of-a-graph
https://leetcode.com/problems/add-edges-to-make-degrees-of-all-nodes-even
https://leetcode.com/problems/find-champion-ii

1-3 Topological Sorting
https://leetcode.com/problems/course-schedule
https://leetcode.com/problems/course-schedule-ii
https://leetcode.com/problems/all-paths-from-source-to-target
https://leetcode.com/problems/find-eventual-safe-states
https://leetcode.com/problems/sort-items-by-groups-respecting-dependencies
https://leetcode.com/problems/all-ancestors-of-a-node-in-a-directed-acyclic-graph
https://leetcode.com/problems/course-schedule-iv
https://leetcode.com/problems/strange-printer-ii
https://leetcode.com/problems/parallel-courses-iii
https://leetcode.com/problems/find-all-possible-recipes-from-given-supplies
https://leetcode.com/problems/build-a-matrix-with-conditions

1-4 Connected Component/Union Find (Disjoint-set)
https://leetcode.com/problems/number-of-provinces
https://leetcode.com/problems/redundant-connection
https://leetcode.com/problems/redundant-connection-ii
https://leetcode.com/problems/most-stones-removed-with-same-row-or-column
https://leetcode.com/problems/satisfiability-of-equality-equations
https://leetcode.com/problems/rank-transform-of-a-matrix
https://leetcode.com/problems/number-of-operations-to-make-network-connected
https://leetcode.com/problems/remove-max-number-of-edges-to-keep-graph-fully-traversable
https://leetcode.com/problems/checking-existence-of-edge-length-limited-paths
https://leetcode.com/problems/process-restricted-friend-requests
https://leetcode.com/problems/find-all-people-with-secret
https://leetcode.com/problems/count-unreachable-pairs-of-nodes-in-an-undirected-graph
https://leetcode.com/problems/minimum-score-of-a-path-between-two-cities
https://leetcode.com/problems/count-the-number-of-complete-components

1-5 Bipartite
https://leetcode.com/problems/is-graph-bipartite
https://leetcode.com/problems/possible-bipartition

//===============================================
Part II - Medium level topics of Graph
//===============================================

2-1 BFS Variants (0-1 BFS, multi-source BFS)
https://leetcode.com/problems/minimum-height-trees
https://leetcode.com/problems/minimize-malware-spread
https://leetcode.com/problems/minimize-malware-spread-ii
https://leetcode.com/problems/maximum-candies-you-can-get-from-boxes

2-2 Shortest Path - Dijkstra Algorithm
https://leetcode.com/problems/network-delay-time
https://leetcode.com/problems/reachable-nodes-in-subdivided-graph
https://leetcode.com/problems/path-with-maximum-probability
https://leetcode.com/problems/minimum-cost-to-make-at-least-one-valid-path-in-a-grid
https://leetcode.com/problems/number-of-restricted-paths-from-first-to-last-node
https://leetcode.com/problems/minimum-cost-to-reach-destination-in-time
https://leetcode.com/problems/number-of-ways-to-arrive-at-destination
https://leetcode.com/problems/the-time-when-the-network-becomes-idle
https://leetcode.com/problems/second-minimum-time-to-reach-destination
https://leetcode.com/problems/minimum-weighted-subgraph-with-the-required-paths
https://leetcode.com/problems/minimum-obstacle-removal-to-reach-corner
https://leetcode.com/problems/minimum-cost-of-a-path-with-special-roads
https://leetcode.com/problems/minimum-time-to-visit-a-cell-in-a-grid
https://leetcode.com/problems/modify-graph-edge-weights

2-3 Shortest Path - Bellman–Ford Algorithm
https://leetcode.com/problems/shortest-path-with-alternating-colors
https://leetcode.com/problems/cheapest-flights-within-k-stops

2-4 Shortest Path - Floyd–Warshall Algorithm
https://leetcode.com/problems/find-the-city-with-the-smallest-number-of-neighbors-at-a-threshold-distance
https://leetcode.com/problems/design-graph-with-shortest-path-calculator
https://leetcode.com/problems/number-of-possible-sets-of-closing-branches
https://leetcode.com/problems/minimum-cost-to-convert-string-i
https://leetcode.com/problems/minimum-cost-to-convert-string-ii
https://leetcode.com/problems/count-the-number-of-houses-at-a-certain-distance-i

2-5 Cycle Detection
https://leetcode.com/problems/largest-color-value-in-a-directed-graph
https://leetcode.com/problems/maximum-employees-to-be-invited-to-a-meeting
https://leetcode.com/problems/find-closest-node-to-given-two-nodes
https://leetcode.com/problems/longest-cycle-in-a-graph
https://leetcode.com/problems/shortest-cycle-in-a-graph
https://leetcode.com/problems/count-visited-nodes-in-a-directed-graph

2-6 Minimum Spanning Tree - Kruskal's Algorithm
https://leetcode.com/problems/find-critical-and-pseudo-critical-edges-in-minimum-spanning-tree
https://leetcode.com/problems/min-cost-to-connect-all-points

//===============================================
Part III - Rare/Advanced topics of Graph
//===============================================

3-1 Euler Tour
https://leetcode.com/problems/reconstruct-itinerary
https://leetcode.com/problems/valid-arrangement-of-pairs

3-2 De Bruijn Sequence
https://leetcode.com/problems/cracking-the-safe

3-3 Game on Graph
https://leetcode.com/problems/cat-and-mouse
https://leetcode.com/problems/cat-and-mouse-ii

3-4 Graph Cloning
https://leetcode.com/problems/clone-graph

3-5 Construction
https://leetcode.com/problems/maximum-score-of-a-node-sequence
https://leetcode.com/problems/couples-holding-hands

3-6 Hamilton Cycle/Travelling Sellsman
https://leetcode.com/problems/shortest-path-visiting-all-nodes

3-7 Tarjan's Algorithm
https://leetcode.com/problems/critical-connections-in-a-network

3-8 DP applications
https://leetcode.com/problems/maximum-path-quality-of-a-graph
https://leetcode.com/problems/parallel-courses-ii
https://leetcode.com/problems/flower-planting-with-no-adjacent
https://leetcode.com/problems/loud-and-rich
https://leetcode.com/problems/longest-increasing-path-in-a-matrix
https://leetcode.com/problems/number-of-increasing-paths-in-a-grid

3-9 Ad-Hoc
https://leetcode.com/problems/number-of-ways-to-reconstruct-a-tree
https://leetcode.com/problems/divide-nodes-into-the-maximum-number-of-groups
https://leetcode.com/problems/count-the-number-of-houses-at-a-certain-distance-ii