I'm trying to educate myself (Autodidacticism), is there a structured way to do this?

I’ve read about 50 books in the past year. Now that I’ve gotten better at speed reading I cover about 2–3 a week. To better understand my interests, I read a broad range of topics including science, philosophy, business, psychology, english and so on. Recently I opened a business so unfortunately I don’t have time for formal schooling…at least for now. While I’m managing the business, I’d like to emulate a formal university education during my own time. Is there a structured way of doing this?

So far, I’ve read books and wrote reviews, watched open source lectures online (Yale) and took notes, and applied some things I’ve learned to my business. What I’m looking for is more structure and more diversification (something along the lines of general education). I’m 20 years old. Thanks