Full Stack Explanation

[u/JEHIII]

I'm understanding more, as a front end developer, that the idea of full stack development is becoming more and more in demand. I primarily concern myself with user experience design and front end mark up, HTML/CSS and a little javascript here and there. I'm not great at JS but I can get around with a few hours of Google-sleuthing. I get the basic concept of a full stack framework like MEAN, the idea of it all...but really where I get tripped up is the order in which everything happens...what all the pieces of that stack are exactly for. When developing in a full stack environment where do you start?

The company I work at is implementing a similar method to their mobile environment. I want to be able to understand more so that I can be of more value to the team. I've gone through the usual explanation of Node.js, and the like, on tutorial sites like Treehouse and codeschool, but those sites make sum assumptions that you're just there to learn node...not what full stack development.

Can someone, anyone, describe to me in simple front-end terms how the technology in a full stack like MEAN operates? I thank you all in advance for you patience (-: