I agree with Tenbob. Forget about the points for now.
You get one point when there is $.40 in rake. That means it need to be an $8 pot. Those are sort of hard to get a lot of in the $5 ring games.
Points can be used to buy stuff, like cards, hats, books, and entries into tournaments. If you have 2,000 points you can email Pokerstars and they'll give your account the ability to create private tournaments.
For people who used promotional codes when they deposited, points are used to determine when you can get your deposit bonus back.
Personally, I've never used my FPP's. I hoard them. Maybe some day I'll use them to get something nice, but in the meantime I'm just letting them accumulate.