Hand 1: Call. You have a decent suited one gapper with lots of limpers already in the hand (for implied odds if you hit). Also you have position. And the amount of limpers might deter one of the blinds from raising.

Hand 2: Fold. 35s is a horrible hand. On top of that you are facing a raise and a call before you and your position sorta sucks. I don't even call with this in the SB.

Hand 3: I fold this and find a new table. Your first two hands were from full ring and this has 6 people. I play on a table until there are more than two people sitting out, then I go find a different one. It's not good to switch between 6max and full ring when you are just starting out. Anyways, back to the hand. I might limp something like this behind 2+ limpers and look for a flush. If it was folded to you on the button and you had something like KTs this is a lol raise for a steal. But here I just don't like playing weak suited kings in pots I raised. The limper very well could have a better king, or even an ace and have you dominated. Not to mention you're just racing against the pocket pairs he limps here also.