Outside of that I'm just bumbling by doing random clickbank things, nothing major just buy traffic and jam it at some lander and build a list, but as I say its just a side project at the moment. I'm at core a developer though, have worked on many a project thats turned a very nice profit, but been out of the game a while, and facebook seems to be a much more unwieldy fish than it used to be.
Making a lot of money on YouTube is not as easy as you might think. There are a lot of hurdles to overcome in the process. It's definitely not a way to get rich quick. However, if you have a hobby, are really good at a particular activity and would like to help people, are funny, or even if you just want to have some fun, YouTube is a great option to cash in some extra bucks doing something you love.
Upwork: This website offers a great marketplace for selling just about any professional service. You don't need a merchant account, website of your own or anything else for that matter. All you need to do is be able to provide a high-quality service at a reasonable price. But be informed, you will have to compete with many others that are constantly bidding on open jobs.