Added sample subclass

- Added a sample subclass into book.
- Updated README with instructions for adding chapters and using templates, clarifying project usage for Obsidian and other platforms.

README.md

@@ -6,7 +6,7 @@
 [![D&D 5e 2024](https://img.shields.io/badge/D%26D%205e-2024%20(5.2.1)-red.svg)](https://www.dndbeyond.com/)
 [![Format](https://img.shields.io/badge/format-markdown-blue.svg)](https://commonmark.org/)
 
-This template allows you to get started in creating your own [sourcebook](https://en.wikipedia.org/wiki/Sourcebook) for a campaign setting or supplementary rulebook. This includes basic character creation guide and gameplay guide taken from a recent [Markdown conversation](https://github.com/downfallx/dnd-5e-srd-markdown) of the SRD that I *highly* recommend you contribute to. Everything else you can fill in yourself.  
+This Obsidian (though not limited to it) project with templates you copy or use the built-in system to write your creatures, spells, or whatever for creating your own [sourcebook](https://en.wikipedia.org/wiki/Sourcebook) to use in campaign setting or supplementary rulebook for later. This includes basic character creation guide and gameplay guide taken from a recent [Markdown conversation](https://github.com/downfallx/dnd-5e-srd-markdown) of the SRD that I *highly* recommend you contribute to. Everything else you can fill in yourself.  
 
 ## Recommendations
 
@@ -15,6 +15,13 @@ This template allows you to get started in creating your own [sourcebook](https:
 - [mdBook](https://rust-lang.github.io/mdBook/)
 - [Harper](https://writewithharper.com/) spellcheck
 
+## How To
+
+- Add a chapter to the Summary 
+	- See [mdBook documentation](https://rust-lang.github.io/mdBook/)
+- Insert or paste the contents from `/templates`
+- Write whatever you want down
+
 ## Contributing
 
 If you want to contribute this template, feel free to lend a hand.