the first I recommend of course bitcoin, this is very good for short and long term investment. the next i suggest altcoin ethereum, and monetha.
and the last (will be held ICO 17 november tomorrow), that is spectre.ai
The first thing for future is bitcoin, all will suggest this only.I am sure about it.Come to the altcoin, ETH, Waves,Lite coin are some of the top most Altcoin. You can choose any one among this.It's purely based on the amount of dollars you had in your pocket.If you had more means,try to occupy the all.