How can I learn more about business and money without going back to school? Are there any online inexpensive courses, books or other ways to gain more knowledge in this field?

I believe it is not necessary to go to school to learn about business and money nowadays. Let me explain why I believe this.

I was tired of not having any money at the end of the month, so I decided to change. I begin to learn about money from books and videos.

With the information I acquired I got rid of my debt, built an emergency fund and started to make my money work for me (a.k.a. Investing).

All of this was information that it was available to me for free or very low cost (I could find the books for a very low price).

If you want to learn about business, learn from those who actually have a business. Experience is the best teacher for these situations. Most people do want to share what they learned over the years.

The trick is to always keep learning.