I recommend you use a regular pool initially. While I like the concept of p2pool and mined that way for several years you may run into difficulties. Better to take the easier route for a beginner.
I use www.litecoinpool.org and they currently payout 108 percent because of merged mining.
If you used p2pool you would have to run core wallet plus p2pool software. If you run on a regular pool all you need is a lite-wallet to hold your coins in.