How do you do your own research if the coin is a good investment?
For me, I always look on the purpose of the project, the team behind it, what exchanges is it available on etc. And one of the important thing for me is the total supply of the coin.
I also research if the coin is Proof of Work (POW), Proof of Stake (POS), Pre-mined or other.
That's a good point. But from my experience, that is not enough. You have to see the project clearly. First of all, you can search the team member behind that project. I see some bitcointalk members always googling first the project team, and they found many project using fake Image for their members.