I think ICO is also a great way to make a lot of money, just like crypto trading or investing, but watch out because there are a lot of scammer around most popular ICOs and they will try to scam all your money by spamming your email with the presale link or a private message you on the slack or telegram. I recommend you to check the ICO's team, whitepaper, social media profile and community. If the project has a lot of members on the telegram then I think the project is legit.