Litecoin and Ethereum are stable. You are not risking a lot by investing into these two. Neo coin is on breakout now. Chinese crypto - Chinese community is huge so adaptation could be huge -we will see what Chinese regulators will do. Those 3 are my picks. Already profiting on ETH and LTC last days 
When it comes to investing, I like the risk, so I will invest in the money that will break through in a short time. Facing danger and making the right decisions will make you mature and talented.