Start reading every forum that you think pertains to you. If you fly American, read that forum. If you stay at Sheratons, read the Starwood forum. If you enjoy food, Flyertalk has a dining forum.
I flew United for several years before discovering Flyertalk. Thought I knew it all.

After 3 months on Flyertalk, I learned more about UA than I did in multiple years flying United.
Read Read Read. Every forum has stickies on top. Read them. The forums have Moderators. If you have a question, ask. Most of us don't bite, with a couple of exceptions.
Welcome to Flyertalk
TravelnTexan.