Here are the list of Trading Sites and Exchange you can use. Feel free to try them and possibly receive discounts and other bonuses offer by these sites.
You can also use these following tools to properly and max your tradings:
a. Tradingview.com for charting.
b. coingecko.com for conversion.
c. coinmarketcap.com the bible of cryptocurrency world.
d. coinmarketcal.com for newsfeeds and latest on a calendar basis/mode per coins/assets.