Team, Road map, Disruptive in nature, Hype or Marketing, Size or range, Business utility all these criteria are important when choosing a project. But I spend more time studying the command.
Do you provide signals for free? If for free, why? Are you an altruist? If your signals in the telegram channel are paid, how much is the subscription fee per month?
I like etherdelta, once to understand and nothing complicated. In the Internet a lot of videos on working with this exchange. But it does not always work stably unfortunately.