The first lesson here is not to ask for financial advise because everyone here has different plans and maybe they will shill you the coins that they have right now in their back.

The second listen is DYOR (Do Your Own Research), with that you will have total control of which coins you want to invest and maybe along the way will learn something in the crypto world, specially if you wanted to become a millionaire because it's not going to be easy, just saying.

Of course, there could be individuals who become self made millionaire here, but I doubt that he/she just randomly ask questions here and suddenly found success.