Nowadays, there are many ICO projects that are scamming a lot of people just for profit. So everyone should:
The first step that all people in the world should do before investing in anything is self-study. This will sometimes take a lot of time. However, if you want to have high profits, you have to choose carefully. The first step is to read the company's official report. The whitepaper is a detailed business plan. There you will find why their projects are so useful to society, how they intend to accomplish their goals and sometimes they face adversity. I see this as an advantage because it means that the company recognizes that there are difficulties and do not try to hide them.
Next, study the team members. If the team members are not presented with a clear record on the company's website, this is a suspicious point. If so, then you have to keep watching Linkedin and looking for their past work experience and, importantly, have their past work experience relevant? In many cases, co-founders and team members try to polish their names.