If you've gotten to know about the altcoins and want to start trading, Binance may be able to help you. I was introduced to the site by a friend when trading Euthereum two years ago. Later on I learned a few more sites. Kucoin is also a good site. Bittrex is a new web site I recently used abt81 to trade Litecoins and really it's very good for me. Bitfinex or Cryptopia is also an option if you want to try it out.