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

I think the basic thing you need to consider is the white paper. You need to read them carefully. Then, you need to find out the team members to see if they are good ennough to make the coins valuable.