To sum up, the easiest way is to see if there are any bitcoin ATMs near you. There are a few sites you can use to search. This one has info on several countries
https://coinatmradar.com/. As others mentioned,
https://localbitcoins.com/ lets you connect with someone near you who wants to buy bitcoins. Some exchanges let you cash out in multiple currencies, like coinbase and bittrex, but using an exchange requires you to send then information to verify your identity and send the bitcoin you have now to the exchange.
Just make sure it's an ATM that does both deposits and withdrawals as most ATMs out there only do deposits.