I think the most important thing when you want to invest in ICO is; First, Check team background, look for transparency, work experience, and their emotional maturity. Then ... learn about the products they offer. there must be a clear 'need' to be met, a market with a solution and ideally a long-term vision there must be clear and profitable. Read their whitepapers carefully, look at the roadmap and through the currency industry and Blockchain addressed.