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book/exercises/type3.md

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-# User Type 3
+# User Type 3
+
+Now that you've made your own version of the book, it's time to add some content. As user type 3 you will work primarily in `.md` (Markdown) or `.ipynb`(Jupyter Notebook) files. In Jupyter Book, `.md` files contain text-based content with formatting, while ipynb` files contain both text and executable code cells. In this exercise you will learn how to structure a `.md` file. 
+
+Exercises for user type 3 relate to:
+
+- File Structure (Markdown)
+- In-text referencing
+- Adding a figure