You need to do a good research about the project. We can take a lot of ideas about from the studying the project. Mainly the concept of the project, team, roadmap and other things are very very important. I saw, some tokens comes very big, but only for short-term. Then the token dead. maybe the main effect can, team, roadmap or other things. So study 1st about the project well. Then another thing is token supply. Whatever, at this time is very very difficult to find good token because there are thousands of tokens.