Bootstrap cheat sheet, is there one?

Question

Bootstrap

Hello, the bootstrap has become too fashionable, I decided to study it, everything is clear in principle, but there are too many classes and names, I can’t remember everything, does anyone have a cheat sheet or met somewhere, like jQuery, where the class is briefly written and next to it does. For example, a picture of a horizontal line, etc. It takes a long time to scroll through the documentation every time.
Thank you.

Answer 1

www.w3schools.com/bootstrap

Answer 2

There is much
more concise and understandable than in the off-doc, in this case))