Crowd source it.  Go to coinmarketcap.com and investigate the top 25 or so.  Those are coins, for the most part, that have already been vetted by the community and deemed worth investing in.  Sticking the with top coins is a good way to diversify and get your feet wet without having to worry about getting stuck in a scam coin.  After you are comfortable with that, you can try your luck with newer coins or ICOs, if you want.