How Often Can You Buy And Sell Xrp?

How does a person get another person to transfer XRP from their source of XRP to him or her? I am not a fan of cryptocurrency and have tried looking on the internet but can’t really find any good answers. How often can you buy and sell xrp?I am thinking about buying some xrp with my bitcoin if that is possible, then transferring it into cash or a bank account, since the price is rising at the moment.Perhaps there is a better way to buy some online without having to wait for long payment processing times?Being an extremely newbie in Blockchain technology, I don’t know very muchIf someone has experience in this area, would be great if they could share some information with meThanks