I think you're not yet ready to start day trading, if i were you, you should focus first on researching and reading more articles that is related to crypto trading. Because this kind of job is not an easy thing, it takes a lot of risk if you don't actually know how to do with it and how it really works.
The op is not expert on trading but I think the op was want to be expert that is why he is asking about the good coin, but if you really want to become an expert you should research by yourself so you are the only one who may know the real good coin.