One can use Shapeshift to change one type of cryptocurrency to another, making it a good choice for one who wants to obtain altcoins.
First off, you should note that we almost exclusively review exchanges that we have used, with solid volume, that have built a positive reputation for themselves over time.
With that said, in a few cases where we are prohibited due to region / country, like with BitMEX, we have not used the exchange to do live trading.
In other words, these are generally all exchanges we would recommend to a friend based on reputation and/or have used ourselves.
With the above said, there are risks associated with any exchange and you must use each at your own risk.
There are specifically risks with leaving cryptocurrency on an exchange, exchanges going down, and risks in terms of placing orders (if you mess up a buy/sell order, there is no going back).
Take some time to understand the risks before trading. With that said, if you do want to trade, the following exchanges are some of the best cryptocurrency exchanges we have come across.
For more reading, see a list of exchanges for beginners.
Coinbase’s GDAX (now Coinbase Pro) is a cryptocurrency exchange that allows you to trade Bitcoin, Ethereum, XRP, and more, allows some coin-to-coin exchange, and pairs with Coinbase.
Kraken is a cryptocurrency exchanged based in San Fransisco on which you can use fiat currency and trade many types of cryptocurrency.
Coinbase is one of the more popular and user-friendly choices for cryptocurrency investors to buy/sell Bitcoin, Ethereum, and other cryptocurrencies.