Learning Dreamweaver

Adding to @Jon Fritz's reply, you will do well to go to Learn web development | MDN and apply these lessons using VSCode as your code editor. To learn more about VSCode, go to VS Code: Tips and tricks for beginners | MDN Blog.

Code editors - Learn web development | MDN may help you decide.

F1 on your Help menu:

https://helpx.adobe.com/support/dreamweaver.html

• Getting Started
• Tutorials
• User Guide

If you have specific questions, feel free to post back. A fellow product user will be happy to help you.

Dreamweaver is just a glorified code editor. There's nothing much to learn if you know how to work with code.

Read chapters, do code exercises and take quizzes at the end.
- https://www.w3schools.com/html/
- https://www.w3schools.com/css/
- https://www.w3schools.com/js/

- https://www.w3schools.com/bootstrap/

Once you understand code basics, you can begin using DW immediately.  No special courses required.

I can't recommend "learning Dreamweaver" at all. 

The program hasnt had any significant changes since 2020 when Adobe put it into a mimumum development status. The only things they've updated are a couple of the bolt on third party libraries. No new features and no bug fixes are planned going forward. DW is essentially on life support for the current userbase.

Instead, spend your time learning how to code html, css and javascript. That way, when Adobe pulls the plug on DW, you'd be able to use really any web development program to create sites.