Ive played 10NL for ages and 25NL for a while now, the vast vast majority of players dont 3bet light. If you get 4bet, unless you have a good read I'd probably fold - its almost always AA, KK. I've read a lot about playing AK for stacks, but at the micros I wouldnt advise it based on what I've seen unless the guy's a donk and you've seen him all in preflop with some random crap.

Everytime someone gets it in pre with crap MAKE A NOTE. These players will pay you off when you have AK.

Just my 2 cents.