Try Localbitcoins, Coinbase, or CEX.io (high fees, but a pretty straightforward verification process now). You can do paypal, but be very careful. this is generally frowned up because folks have the ability to cash back, if the payment gets reversed, your bitcoin is still going to be gone with no recourse (cant reverse a txid). localbitcoins should allow you to withdraw bitcoin to fiat to a bank account, or to meet up with someone in person. if you go the meetup route, please be careful! well lit, well trafficked place during the peak of business hours, or the police station/a library/ a supermarket.

handle it like you would if you were buying something off of craigslist.