There are only 2 things we can invest:
Time & Money.
Rather than complaining about not having enough money to invest, invest your time instead. Time is the great equalizer. A rich person has no more or no less than you, me or anyone. We can beat anyone with what we do with our time. Learn the skills or put in the labour until it turns into money.
The trick is once the money comes in, to keep investing the time so you know how to use the money and not lose it.