There are plenty of ways to exchange your BTC to cash. The most used method is selling on an exchange which pays out in fiat. I can't recommend you any because I don't know from which country you are. The other way is sell your BTC face-to-face. I would recommend website called localbitcoins for that. It's fairly good because nobody can scam you and you have opportunity to meet new people! It is always good to have someone acknowledged with cryptocurrencies.