You could check localbitcoins for people who buy btc for paypal.
Is it safe? Isn't US only?
It's not US only, it's worldwide.
They escrow the transaction and you release the btc when you have your money in your account.
I can't vouch and say it's 100% safe, but I use it often and it's been great. Also people have feedback you can check before dealing with them.
Can you indicate someone you already bought from? Please, i really want don't know who to trust on this site. I saw this dude(drewster) that i found out he was a scammer by searching for him here on btctalk... And he has 100+ trades and all of them with positive feedback. If i can't trust ppl with 100+ positive feedback, who am i supposed to trust then?