Lesson 0.0: Introduction to the introduction
Whenever you see the number zero (as the numbering appears above), know that it is an introductory lesson (and therefore optional lesson). The video below is lesson 0.0, i.e. the introduction to the introduction.

Decision-time
If you are unfamiliar with the concept of interest or the role of money as a form of exchange in an economy, you would probably benefit from the rest of the lesson below.
If you are comfortable with these concepts, feel free to jump ahead to the quiz or to the next lesson.
Lesson 0.1
The video below is the introduction lesson.
In it, we review:
- What is interest?
- Borrowers and lenders
- Important investment dates in a simplified scenario