If you're looking for a cryptocurrency market, the best place to start is by investigating some of the most popular exchanges like Coinbase or Binance - as they are two of the most well-known exchanges in the space. However, there are many others that offer a variety of services and coins. Do your research to find the exchange that's right for you. Another option is to use a broker that offers cryptocurrency trading. These platforms will typically offer a wider selection of coins than an exchange. However, it's important to remember that brokers may charge higher fees than exchanges. Finally, if you want to avoid paying any fees at all, you can trade directly with another person. This is often called peer-to-peer or P2P trading. LocalBitcoins is one popular P2P platform, but there are many others available.