Buying and selling Bitcoin can be done through a variety of methods. The most popular ways include using a cryptocurrency exchange, directly from another individual, or through a crypto-ATM machine. To buy or sell Bitcoin, you will need to set up an account with a cryptocurrency exchange. You can then transfer funds into the exchange and use them to buy and sell Bitcoin. When buying or selling Bitcoin, it is important to remember to transfer the funds securely and be aware of any fees associated with the transaction.