I have worked with an agency that tried to make money out of Youtube. They hired a video editor, a script-writer, a voice-over guy and they took sponsors money claiming that they will make it on youtube. Shortly, that never happened. It takes a lot of time and there's no shortcut. People on youtube will try to sell you the idea of easy money just to sell you their course. They don't talk about how many times you would fail, experimenting with different niches, trying different video editing styles and so on. Of course, if you have a lot of money to burn it's worth it, you just sit on your back and wait for a lucky channel to blow up and start making a good passive-income.
My advice, as I've been adviced here too is to be pacient, make videos and be consistent. It's a long journey and it'll probably take years of uploading before you get a taste of success, and I mean REAL success, talking about life changing money.