I want to learn how well to trade ether. Thank you.
for trading ethereum, like all the others cryptocoins, you need 2 things:
1) the cryptocoin, eth, btc, ltc or whatever.
2) an Exchange account where to trade coins.
optionally you can use a p2p Exchange like etherdelta.
but if you want to learn how trading in a profittevoly manner, this is another thing :-)