At 2nl an overpair is the nuts, in both hands.

Hand1- BET the flop PLEASE. theres no need to slow play these guys and they will just keep assuming you are cbetting with AK or something. Plus there are alot of draws, you wanna make them pay.

Hand2- 3bet that mofo with KK, dont just flat his raise. Make it like .40cents to go. Do not slowplay overpairs at these levels, you have the nuts, play them super aggressively. You dont need to trap people, they will hang themselves most of the time.

/edit In regards to poker tracker, its nice to use but i really think it gives more information than you need at 2NL. Concentrate on basic preflop/flop play, basic poker stuff.