You can go through visit this page
www.coinmarketcap.com for reference and you can find top Altcoins and some other good coins listed.
It's one of the most trusted source of Cryptocurrency ranking and you can find almost compete information.
Try to follow advice from friends above.
www.coinmarketcap.com, there you will find the answer may be able to help you to know the trend token or coin currently, view the graph up turunya value bitcoin and altcoin, trend market sales of 1h, 1d, 7d and so on. from there you can do the analysis of the best to trade and investment. for additional information you can get in this forum bitcointalk.org. here you can knew information about bitcoin and altcoin, as you do this time to ask and always read the information updated.