I believe Virwox was one of the sites which allowed you to buy bitcoins with paypal, but had a pretty steep fees. You can always buy it through traders, but another way you can buy it is through buying digital goods online and then selling it. You can look into buying an Amazon card, and then selling it for a 5% discount. You will have to take a hit in price, but thats the only good way to buy bitcoin with paypal. The 2 are just not compatible enough.