Getting to know my serger

So, I’ve been using my serger for finishing edges but I know that it can do more. Why else would people be paying thousands of dollars for a machine like this?

I need instruction. I have sketched out my dream hoodie and I want to make it happen. The book and video that came with my serger are a little sad (but I expected that when I bought the cheap serger). I have been looking around online for some more instruction (preferably video) and haven’t come up with much (although I did find an entertaining clip of Santino singing about a the serger).