How to search Steemit for FAQs?

hi friends - this may be a stoopid newbie question, but I cannot find a FAQ section for Steemit, nor any Help section?

I've received helpful comments on some of my posts, but I'd like to start teaching myself some of the basics and don't know the best place to start.

For example: how do I "Follow" a hashtag topic?

thanks for your advice and patience!
Benton