Do your own research, look into the whitepaper, the team, the concept and if there are no issues ask questions on their thread. Then you can maybe get involved in a bounty program.
There is no rush to get involved, don't jump in just because you are worried the price is going to jump up (most ICO's have a 30 day period)
Personally I am interested in Crowdholding, they launched their ICO today and it looks a very promising project.
https://ico.crowdholding.com