docs/hero_create_mdbook.md

@@ -65,6 +65,8 @@ We first show the directory tree template to give an overview of the project. Wi
 
 Hero uses three main directories to build an mdbook `books`, `collections` and `heroscript`. Let's have a look at each of them.
 
+> Note: Once you understand the logic, it's easier to just copy an existing Hero Mdbook and modify the copied files to fit with the new book.
+
 - `collections`
   - This directory contains all the markdown files needed to build all the books in the repository.
     - In our case, we will put two markdown files in the new collections named `new_mdbook`