Definition of "playing well after the flop"?

[phish]

'Playing well after the flop' varies tremendously depending on the stakes you're playing (which determines the types of opponents and usually # of people post-flop).

At your level, playing well after the flop is mainly a mathematical exercise. Bet/raise with the best of it (or if you have proper return) and call if you have proper odds and fold if you don't. Hand reading is important even at this level, but since most your pots are probably multi-way, you can generally assume that someone betting or calling have a reasonable hand and play accordingly.

At higher levels, the mathematical part of it can become almost irrelevant and the psychology becomes paramount.