There are many good coins which can have a good future. Eth , Ripple , Litecoin , DGB are  few good coins. If you go to Poloniex and Bittrex, you can easily find many good coins there. Once you select a coin, try to get its history from coinmarketcap and its ANN thread on bitcointalk here. See what people says about it, follow its project time-lines and you are good to invest in it.