This section has no structure. Pick whichever concept sounds the most interesting. You just want to add a few new ideas in to your game, the order doesn't matter
|Way Ahead Way Behind||Intermediate||Concepts||4/10|
|Stack To Pot Ratio (SPR)||Advanced||Concepts||8/10|
|Progressive Bet Sizing||Advanced||Concepts||6/10|
|The REM Process||Expert||Concepts||9/10|
|The REM Process - Range||Expert||Concepts||8/10|
|The REM Process - Equity||Expert||Concepts||8/10|
|The REM Process - Maximize||Expert||Concepts||6/10|
|Elastic and Inelastic Ranges||Expert||Concepts||4/10|
If you could only read up on one concept, I'd go for Relative Position. Position is key, and relative position will help you to spot dangerous preflop situations. This concept will save you the most amount of money in the shortest amount of time.
If you can read more than one (ideal situation), I'd recommend The REM Process. Range-Equity-Maximize completely changed the way I think about poker. This concept will help you win more money over the long run.
Hopefully these topics will give you something to think about. And that's good, because if they're giving you something to think about, your game is evolving.
Go back to the awesome Texas Hold'em Strategy.