Do your own research.
Go in small at first and test the waters. Make sure you really understand each product before investing.
BTC is your best investment,, some alts might have a nice growth, but there's too much speculation going on alts, BTC had the best history, price rising with a good and steady pace, so that will be your best chance to invest, at least, with BTC good history, you had a very little chance to lost your money comparet to alts ~