[dccoolgai]

Lodash.js every single piece is explained with complete lucidity, and even if it weren't the examples are concise and illustrative.

[danShumway]

A small detail, but Lodash is also globally available on their doc page. So if you see a piece of documentation and want to experiment with it, you just hit Ctrl-Shift-I and start typing.

It's a tiny thing that saves me a lot of time.