1. Buy: To buy cryptocurrency, you must first set up a digital wallet account. This account can be accessed through a cryptocurrency exchange such as Coinbase or Kraken. From there, you can use your debit/credit card to purchase coins or use bank transfers for larger purchases.
2. Sell: To sell cryptocurrency, you must log in to your digital wallet account and select the desired coin you wish to sell. You will then need to select an exchange where you can exchange your coin for fiat currency (e.g. USD, GBP etc).
3. Store: To store cryptocurrency, you can either use a cold storage wallet (hardware wallet) or a software wallet (online exchange). Storing cryptocurrency on an exchange is not recommended due to security risks such as hacking. Cold storage wallets are the safest option as they are entirely offline and are not connected to the internet.