I seriously don't understand why everybody is dead set on putting all their money into cryptocurrencies. It isn't a guarnteed thing people despite the fact there will be much growth in this area, nothing is a guarnteed thing! I would tell you to take all your money out of stocks and invest at most 50% here. That way if you mess up you can invest more but you won't end up being broke neither. For exchanges try sticking to the top ones to begin as they will serve you best most probably. That includes exchanges like Poloniex, Bittrex, Binance, and Bitfinex.