Hello, I am new in this forum but not new in cryptocurrencies, I started trading cryptocurrency in 2016 and my first cryptocurrency I bought that time is vergecurrency and other penny coin. And I returned my money in bundle because they have good tech and very good team..So early this year I noticed that a lot of coin is now scam and failed promises. So please if you want to buy any coin don't go to coinmarketcap only because coinmarketcap can list any coin without verifying it well, just go to their telegram group and ask questions I think this can help you stay away from scam coin...
For me, it is better to buying some existing coins than the new coins that just been created. Unless you know the project of the coin well, it is not recommended to buy it. Just wait and see how the project going. You will be able to decide whether you want to buy it or not.