Hi,
To learn Bitcoin Trading, you can read blogs about bitcoin trading and also you can watch videos for the same. There are many companies available that provides you for trading, buying and selling your cryptocurrencies.
Here is the list which provides Bitcoin (BTC) trading along with the supported countries, exchange type and payment method. Visit - https://blog.infinitemlmsoftware.com/top-bitcoin-exchange-list-2017/#.WRl7_-t97IU
Hope this list will help you to narrow your search.