Seems a lot of people give you recommended a number of tokens, but you need to understand each of these tokens, so you will have the confidence to hold them for a long time, believe in yourself, I believe you will be rich. 
If you want to hold you coin for a long term,buy it while the market price value is still at low and sell it when the market price value will rise. I want to recommend Litecoin because it's price value now is very low.