Just like depositing money in the bank or buying a stock, you keep your cryptocoins in a digital account known as a wallet, which lets you store, receive, and send them.
Cryptocurrency won't just magically appear in your wallet out of thin air. You've gotta buy it, first. There are several ways to do that, but the easiest is to exchange a fiat currency—dollars, euros, pounds, etc—for some cryptocurrency. And the easiest place to do that is at an exchange.
Think of a cryptocurrency exchange as a stock market for crypto. You register for it, deposit your fiat currency of choice, and then, you can buy yourself some crypto.
If you're looking for your first exchange, a good bet is Coinbase, a U.S.-based cryptocurrency exchange with more than 8 million users, operating in 32 countries around the world. Coinbase lets you deposit fiat money from a bank account, and trade Bitcoin, Ether, and Litecoin. And while there are hundreds of cryptocurrencies, this is a very good, core trio. Each shows a lot of promise, each in its own different way.