If you want to join an ICO, the first thing you should do is analyze the project first because so far many projects are selling through ICOs, almost all of them are just scammers, so when you invest with an ICO you should choose a project that has been audited by an audit firm like Certik and Hacken and apart from that you should also check that the contract of the project you want to invest in has been verified to ensure that the project is not a duplicate of another project.