If you will trade altcoins, choose the altcoins with more trading volume. When the cryptocurrency has low trading volume, it is too easy price manipulation from just a few people and it's better stay away from it...
Trading of alt coins is really a good way to invest your money / bitcoins. And this has been proved by a lot of traders that you are going to nail good amount to it if you are going to be a good trader. But at first you need to search yourself first, if you are contented and you love to trade then for sure you are going to get good profit with it.
this time altcoin is the best investment, besides trade also grew a very good way. looks easy but it is very difficult. because price movements are very fast, really need to learn a lot about trade atlcoin, finding information is the most important thing in altcoin. do not listen to the sensation of others who might mislead you.