Learn more about the project you are interested in, do not rush to invest. Read reviews from other people and make sure they are positive.
That is a good strategy to get involved in any ICO project and to invest in that. I will suggest that the investor have to visit the ICOBench website as I heard that they first confirm the legibility of the ICo and then list that ICO on their website so if we will rely on that website for our investment then we will be never scammed and we will invest our money in a secure project.