The Business Model Canvas is a modeling tool used to structure your business ideas, based on 9 building blocks:

1. Customer segments
2. Value Proposition
3. Channels
4. Customer relationships
5. Income
6. Key Activities
7. Key Resources
8. Partnerships
9. Costs

It is a very handy tool and easy to use and re-use, when working on it with post-its. It's simple and user friendly, even for people without any economical background. 

You can find alot of info and videos on it.

Here are the most important links about how to use the BMC:

http://www.businessmodelgeneration.com/canvas/bmc

https://classroom.udacity.com/courses/ep245/lessons/48743167/concepts/487381500923