As much as it's nice to invest in ICOs, lots of them are scams and only after for the $$$. I highly suggest you study the following before considering to invest:

1. Team - See the credibility of the team by visiting their website and checking out the team section and their linkedin/twitter accounts.
2. Whitepaper - Take time to read their whitepaper and understand what makes their project feasible, not just unique (many unique and untried projects are difficult to implement).
3. Community - Do visit the ICO's telegram and other social media account to see how the community responds to the project. 
4. Online activities - Having a lot of online activities like blogs and articles, social media posts, videos, etc. is sign of an active and healthy ICO.

There are other factors for sure but these are the 4 major things to consider for me. Good luck in your journey!