In fact, you will not find an ideal trading platform and an ideal wallet for storing cryptocurrency. Today, there are a huge number of crypto-currency exchanges and they grow like mushrooms every day. All of them are very similar, but differ in the interface and trading pairs.
And do not forget that if you are mining digital coins, using cloud mining or on your own equipment, as well as planning an active trade, then you can not avoid the use of cryptocurrency exchanges to convert cryptocurrency into Fiat or diversify investments, changing one cryptocurrency to another. It is simply better to choose an exchange with good volumes and a large number of currency pairs. For the benefit of all this now there coinmarketcap.com - where you can view all the stock exchange together with the volumes and currency pairs traded on each exchange.
As for the wallet, the most common wallets are those with support for ERC 20 tokens (www.myetherwallet.com). In addition to it, there are many other hardware wallets, but about each of them you can write separately on a separate article and you still do not understand which one is better.