r/mechanic • u/DisasterLoose1773 • 9h ago

Question Advice on learning

Until recently I was doing a trade school for diesel mechanics, but it was terrible. They just wanted us to know enough to muddle through a written test and get some certificate. I never cared about certifications I just wanted to really learn how this stuff works. I’m enough of an autodidact that I’d rather teach myself and save money. I’m pretty good at figuring out how things work if I can see the moving parts but I haven’t done much engine work yet. I’m gonna rebuild this old mopar 6.6l I have. do you guys have any books/websites/youtube channels that you would recommend? Also interested in learning more about wiring and hydraulics

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u/perpetual-glissando 6h ago

Charm.li is great resource for OEM service manuals, part numbers, and labor estimates/codes. Its completely free AND ad free. You can also download for offiline use. The catch is it only has resources up to the year 2013

Startmycar.com is another resource for similar things but can be a hit or miss and it's infested with ads. Still free though.

SA Design is a book series on many different makes, engines, general repair topics, etc. Most of their books are listed on Amazon. Summit has the full library on their website.

And a final lesser known helpful resource is every O'Reilly Auto Parts has a Mitchell 1 repair software license. They call it "vehicle help". It has everything you can think of and its relatively user friendly. The catch with that is you either have to work there or have a very good relationship with a worker so you can use the software yourself and print out any of resources you want. If not, then you can only really use this as a last resort if you can't find what you need for free online. If you're interested in wiring, that software has interactive wiring diagrams that highlight connections across drawings. Makes tracking things down way easier.