These days virtually all the methods are available for buying the bitcoin and also various options are available for selling. Coinatmradar will help you in finding a bitcoin ATM in your area. All the exchanges will help you in buying and selling the bitcoins. What type of exchange will you choose for selling the bitcoin will depend on what type of holder you are, institutional, small investor, or trader?
Platforms like Gemini and GDAC are aiming for large orders from traders and institutional investors. There are retail clients who are selling bitcoin at exchanges like Kraken, Coinbase, Poloniex, Bitstamp, etc. All of the exchange is having a different interface and some are also offering services which are related to other services like secure storage. Some require verified identification while others are relaxed when small amounts are involved.
If you wish then you can exchange the bitcoin with other crypto assets for getting cash. Some exchanges like ShapeShift are focusing on services like swapping bitcoin, ether, XRP, litecoin, dash, and various others.
Another alternative is a direct sale. You can register as a seller on the platforms like BitQuick, LocalBitcoins, BitBargain, and Bittylicious. If interested parties will like your price then they will contact you directly. All the transactions are done via wires or deposits into your bank account, after which you are expected to transfer the amount which has been agreed. All the bitcoins are transferred to the specified address.
You can sell directly with your family and friends when the wallet is set up for bitcoin. You can send the bitcoin and collect the mobile payment or cash. In this way, all the transfers are done and all of them are safe and secure.
For more info on btc to usd you can visit https://freebitco.in/site/cryptocurrency/bitcoin/converter/btc-to-usd/