You can make your own research about them. There is information on the internet and you can find whatever you want on the cyber network. If you can not make your own research, you can have some little assist from reddit, youtube and social network. They are really helpful if you want to find good cryptos. However, some people only talk about the good sides of a coin without mentioning the bad sides of it. Therefore, you need to be wise in choosing your good coins. Try to combine both other pepople advice and your own research to make your final decision