Always try to get as much information as you can about the project, and a good way to start with that is by reading that sometimes boring but very usefull document called WHITEPAPER, as it contains most of the information about the project, like a roadmap and its timeline, you can see what lays ahead, but you should take a look aswell on the people behind it, the marketing made, all matters for you to make the right call and select the right project and their respective bounties.