Well, there are many scam coins now, and it is difficult for newbies to evaluate a project which is the good/potential project or not. In my opinion, I usually evaluate a new coin based on its developt team, product, roadmap, whitepaper, community... One project cannot be success if it lacks these factors. Of course, there is a roadmap, whitepaper, product but the project still can come scam coin, so we should consider carefully, find more information as we can before joining the project.