Variance will be higher in p2pool than a normal pool. You connect just like a normal pool, but use your payment address as the username and any password as password. As a tiny miner you should either run p2pool yourself, or add "/.00001" to your username when you connect. That will increase the dust in your wallet (smaller payouts) but will prevent the variance where you get very few payouts. (They will average out to your expected earnings long-term but most small miners get frustrated with public nodes if they don't use the /.00001 trick.)
I'm running a patch atm to reduce small miner variance on my east p2pool node if you want to try it. Not as many shares as /.00001 but also less dust. Patch isn't needed if you install and run p2pool on your own computer.