I play at the same stakes, but likely know no more than you about "how to play", and everything I say is likely false at higher stakes, but here goes ...

There's a big difference between losing because someone is sucking out on you (after the big bets are made) and losing because you were beat and didn't know it.

I've found that 90% of the time people bet their hand. They may call anything (and oh they will), but they will only raise or initiate with something. The more they bet, the better they think there hand is.

I find myself losing the most with cards like JTs / KJ when I hit two pair (on the flop) to either a straight or a flush. I hate having to lay down those cards to big bets/raises, and sometimes I don't, but I know in general I should. I run into real trouble trying to play bigger pots with a lot of other people. (This happens regardless of the raise sometimes).

I've also noticed that flops like A 3 6 are deadly because people will call 3xbb with Ax and then hit two pair, or play 45s and go for the straight.

Finally, trust your instincts and don't bet more than you have to unless you are certain you've won. If someone reraise on the river for $1.00 and your unsure, there's no reason to reraise him.