Another helpful animation, from Shred Token to you!
Here is a quick overview of some cryptocurrency exchanges, many more can be found on http://coinmarketcap.com
https://poloniex.com
https://bittrex.com
https://binance.com
https://hitbtc.com
https://etherdelta.com
https://bitshares.org
https://www.coinspot.com.au
https://www.bitfinex.com