Please click the following links to explore more:
What is cryptocurrency:
https://en.wikipedia.org/wiki/Cryptocurrency
What is coin market capitalization
List of cryptocoin in coin market
https://coinmarketcap.com/all/views/all/
List of crypto exchanges that trade cryptocurrency
https://cryptocoincharts.info/markets/info
Price of crypto coin in different exchanges
https://coinmarketcap.com/currencies/volume/24-hour/