Hi,
I think it might be risky to set up your own bussiness. There are possibilities that you 
will have success or not.
 
I believe there are some great options nowadays regarding technology.  
 
A great possibility is to publish an e-book on Amazon Kindle or in other site. 
 
 https://kdp.amazon.com/en_US/
 
 http://www.lulu.com/create/books/
 
You also have the option to create some online courses on:
 
https://www.udemy.com/official-udemy-instructor-course/
 
http://ecommerce-platforms.com/compare/top-5-best-platforms-publish-sell-online-courses-reviewed-compared
 
https://aula.tareasplus.com/Miguel-Hernandez619/Aprende-a-crear-un-curso-Online 
 
I guess you can also create a blog and add advertising that pays for every person who reads your blog. 
 
I haven �t done it yet but it sounds so good that I will do both a publishing,  and creation of an online course and blog.
 
I guess it can get the best of you and it is interesting to be involve in projects like these ones.
 
Good luck.
 
Carmen Chang
Peruvian teacher