Site Manual?

Recently I discovered quite a few things that I did not know about your site, including how lifetime free membership works.

I’m wondering if there is a place for newbies like myself to go to learn things specific to your site… site rules etc.

For instance what is the meaning of:

Current: 390 (Experienced member)

To next level: 22% (VIP member)

Overall: 39% (Lifetime free membership)

Particularly I would like to know how or where to thank members who have gifted me points.

Thanks