I would suggest sticking with the PO freeroll and building a base.
If you like the ring game then do the micros, as far as the easiest builders I like the $3 DONs, they are fairly easy, but you do need a few buys ins to cover the ones you won't cash in.
Once you build it to a fairly decent amount I would drop the DON's and just do the STT SNGs

Good luck and Congrats on winning the game yesterday.