actually, the early/midgame strategy is pretty easy too. read ALeomageus SNG guide (i think its in the FAQ)

Basically you dont want to risk alot of chips in levels 1-3 on marginal hands in decent situations because

A. You need those chips to be able to get respect with your pushes later. 1 wrong move with Kjo in level 2 and now you got 400 chips and almost no chance of scaring people off of alot of hands.

B. You need to craft a tight image so when the blinds starting getting big in levels 4/5 people respect your raises and you have added fold equity


Think about it, how bad do you really need those 45 chips or 75 chips from blinds in levels 2-3? Not a whole lot for the risky situations you will get into fairly often