[Aaron W.]

Basic idea of blind stealing: Keep betting make the villain fold. Bet at least the flop and often the turn, checking behind on the river UI a whole bunch.
Best places to steal blinds: Late position (HJ, CO, B)
Best hands to steal blinds with: PPs, suited connected things, Big cards, suited aces
Best villains to steal against: Tight and predictable ones.

Basic idea of blind defending: Pick decent starting hands preflop and play intelligently postflop (ie, don't spew simply because you think you need to defend your blinds all the time). This will go a very long way if you're playing in the standard micro games.