Advertizing

Hi, I am wondering about if advertizing videos in various FB groups and internetr forums works, and if I can expect after some time to have the ball rolling...how many videos should I post per week.
I could use any advice, because my motivation is very low since I don't know what it is that I need to do in order to succeed in this...if I only had some information I could rely on...

If any of you have any good videos to recommend, or even courses like on Udmy etc., I will be grateful. I am at the same time determined, and demotivated, if anyone knows what I mean by that

Looks like you need to gather more information before any move. Read, there is plenty of info everywhere.

Okay, thanks. Any other advice, a bit more related to my questions?