Thanks. So I have coinbase. I’m going to buy BTC and move it to a paper wallet. When I want to sell how do I transfer the BTC back to my coinbase wallet?Ok go to bitadress.org. U will make a bitcoin address. When u make this address u will be given the address AND the private key. U need this key to get the coin off the wallet and don't share this with ANYONE. Write it down take a pic and save it in your computer. If u lose the key u lose any coins u have on that wallet. Now u can send bitcoin to the address u generated. Once again KEEP YOUR KEY PRIVATE AND SAFE.