KK flop

I would cbet smaller OTF.
Betting so big and fold is weird, so I'd 3bet shove here for sure as played, although he looks like a 26/8 after 36 hands. His open raising range from UTG quite is strong I suppose. Value combos would be 99, QQ, but you don't have the K♠: which is good because you don't block the drawing combos he might be check-raising with.

I went all-in here but I didn't know if it was a good move or an error.

I have to work on one of my leak : I must fold if I am been raised (that is just the idea).

I loose much by calling or pushing. And on NL2/PS.com vilains don't bluff so often (I do it so I think vilains are doing it too).

Here he had aces but he didn't 4bet them preflop.

Hi,
Download PS.com eqilab and work on the ranges. Think what hands could he x/r on the flop and post the results.

On the flop I have an 2 : 1 edge against 66+,AQs+,KQs,AQo+,KQo

33.54% for him and 66.46% for my kings on that flop.

Another thing :

NEVER open Equilab or Pokerstove when Pokerstar is open. If you do that you will receive a warning from pokerstar's staff. Both programs are on the list of unauthorized softwares.

Hmm tough spot..a pair of Q is possible, but when someone plays back at me like that means a set.
Take a note if u went to SD

Notetracker take notes for me. Is a really useful add on of Pokertracker.

I would bet smaller, 10 or so and will fold to the c/r. Haven't seen many c/r bluffs at 2NL. Stacking here is clearly - EV for me, not to mention that it adds to the variation.