Hi guys, there are so many ICOs, such as those listed in
https://www.coinschedule.com. It's pretty hard to review them one by one.
Which elements I need to consider, the team? the product? the promoting technology? or something else?
Thanks for any suggestions

First you to have to study the ICOs. How it's works, then to go to check the site rating and the roadmap & read the white paper.