Bet sizing is still something I don't understand fully. I bet different amounts in different situations, but it's always either half pot or full pot.

If I know my opponent likes to chase draws or will call me down if he caught the flop in any way shape or form, and I hit the flop, I bet the whole pot on each street. If I missed the flop, I try to cbet much less from OOP. From position, I'll bet half the pot on a dry board, and check behind on a wet board, since he'll just call me for his draw anyway.

If my opponent is one of those nut hunters who only raises TT+ and AQ+, and limp/calls pocket pairs for set value, I'll bet half the pot whether I hit the flop or not. Every time one of these guys has called or raised me, I've been beat. Otherwise they fold and my reasoning is that since they're not chasing draws, I don't have to charge them to do so. They're folding unless they flopped TPTK, except they pretty much never hit TPTK or 2pair because they tend to call only with AQ+ and 22+.

It feels like my thinking is more about cbetting and trying to get them to fold instead of trying to get them to call, though. I know I want to bet an amount that my opponent will call with weaker hands, but I'm still not sure how to figure out what that is. It seems that at the micros, the player types are black and white. Either your opponent is going to call you down with bottom pair/draws unless you massively overbet the pot (and even then...) or he will fold without something that crushes (in which cases it doesn't matter how much I bet because he's always folding).