This ticket is a part of #816 and will be used for creating new page titled "Templates" under Chapter 2: Core Concepts.

I will draft the content for the new page in a Google Doc: https://docs.google.com/document/d/1oJzPXap7kVgzYYvMxACaijsBGhlqm_Pv60NW6fy5gwg/edit?usp=sharing

Note that this is a "basics" intro to Templates. There will be a full chapter that covers templating in detail, so this page should introduce the concept to the reader but be a pathway to learning more in the Templates chapter.