Hand 1:
Dealer could be on anything, hard to say. Your hand looks real good, until he calls the $15 after the flop. What do you call $15 on for a $15 pot? He's got you beat at this point, especially with the 9 on 4th street. You can stab at the pot with another bet, at least $20, or check from here (which is what i would do). I would fold a big bet but otherwise cut my losses and play another hand. With NL games you can play smart and consistent for hours increasing your roll, but one bad beat such as this will destroy your hours of great playing. Maybe your getting bluffed, but you will get him next time. I just can't see losing your whole stack with 10's as an overpair, especially with the cheap blinds.

Hand 2:
The first thing I would have done different is take the lead on fourth street. He bets $5, your in an early position, raise and put the pressure on him now. He's probably betting on a high flush draw, hoping you fold anyway. You raise $10-$15 more and he folds, you win the pot. If he calls, i put him on two pair, maybe trips with a possible high club. When the Ah comes out i would bet $15, he's probably gonna fold. At most call, at this point he's got a good hand but can you put him on a higher flush? I cant especially after the situation from the hand before.