Cryptocurrencies are traded on digital exchanges that facilitate the buying and selling of these digital assets. The most popular cryptocurrency exchange is Binance, which offers a wide range of trading pairs, low fees, and high liquidity. Other popular exchanges include Coinbase, Kraken, and Bitstamp. Investors can trade cryptocurrencies against fiat currencies like the US dollar or other cryptocurrencies, and can use features like limit orders and stop-loss orders to manage their trades. Exchanges can be centralized or decentralized, with the latter relying on smart contracts and blockchain technology to facilitate peer-to-peer trades. Trading volumes and liquidity can vary widely among different exchanges, and investors should conduct their own research and due diligence before choosing a platform.