Poker, pr0n, and p0rk ch0ps (NSFW from page 4 on)

OP: Beginner to Master

If I bet as a bluff, I should be thinking "am I getting better hands to fold? Is it likely that he will fold x% of the time to a y sized bet to make it +EV?". If I bet for value, I should be thinking "am I getting worst hands to call? Am I ahead of enough of his range that this is a good value bet?".