Before, you need to learn and explore a lot to find out a good ICO project to invest in but for now I think it's much easier for everyone cause there are so many ICOs analyze website that you can use like icobench, icoscanner,...On these websites, they analyze and vote for every ICO project and you just need to choose the best project to invest in Smiley). Beside if you don't trust these analyze website, you must have experience to check dev team, WP, Roadmap to find out good project.