I was in a $100 freeroll,in small blind position.It was a full table,blinds 15/30, and i had 1560.I was dealt a Jc4c,the dealer,seat 4,called.I called the rest of the blind and the big blind called.

The flop came up Jd 4d 4s.The dealer bet 90,seat 4 folded.

This is the part where im thinking about.I called,big blind called.The turn came up 5c,dealer bet 90 again,and im thinking he probably has a jack,or is on a draw.I raise to 180,big blind calls,dealer calls.

The river comes up 7h.The dealer bets 480,i raise to 960.big blind folds,dealer go's all in for another 600.I called,and he had pocket 5's and had me beat with a bigger full house.

Im still learning and figuring out right betting and stuff,so any help would be appreciated.