The easiest way to buy and sell cryptocurrencies is by using an online cryptocurrency exchange. With an online exchange, you can quickly open an account and purchase a variety of digital currencies with just a few clicks. Popular online exchanges like Coinbase, Kraken and Binance offer the purchase of the most popular digital currencies, such as Bitcoin, Ethereum, Litecoin and more. Additionally, these exchanges often give users access to additional features like trading tools, charts and other analytics.