actually i have never invested in ICO but i will do it and currently i am collecting information for how to choose a good ICO and not a scam.
Yes you right before taking part in any ICO you must have complete information about that ICO, you can collect information from whitepaper as well through social media that how they are famous in social media.
Especially you have to check team who is managing ICO, the repo of the team will clear your doubts.