Reassess is based on the concepts introduced in Amateurs Mind so read that first. They're both good books although I prefer my Silman in a digital presentation. Since you're a diamond member, you might want to check out his monster course "Roots of Positional Understanding" or any other of his half dozen courses on Chess Mentor.
https://www.chess.com/chessmentor/view_course?id=22
I've been playing chess for three months now, fairly decent at it. I've started to understand certain concepts about chess such as calculation and tactics as well as long term strategy and a few opening lines. I guess I could be called an average chess player even though I've played for three months I've studied to the best of my abilities just about every day. My wife the other day bought me two books,
Reassess your chess 4th edition
The Amateurs Mind, turning chess misconceptions into chess mastery
Both written by the brilliant Jeremy Silman. What's everyone's opinions about the books? Are they good books? What can I expect to get out of them and which should I read first?