They're called "bitcoins", and very few people will accept PayPal as it is too easy for the buyer to reverse the charge and run off with both cash and bitcoins.

If you can convince someone of why they should trust a brand new user, and be specific about how many bitcoins you want and at what rates, you might get some offers.

Edit: P.S. If you're OK with small fractions of a bitcoin (like, you just want to see how it works), look at Free Bitcoins Listing to see sites that will give bitcoins away.