And … why not starting with the Starter Theme 2?
- Its Free and updated frequently
- You can grab the full project files and analyze how it’s done
- You can tweak everything
- You can change everything
- You can delete what you don’t want/need
- If you fail, you can restart from the original files
You have all the instructions to start available here: https://github.com/Pinegrow/PGWPBootstrap4StarterTheme/wiki/Pinegrow-WordPress-Starter-Theme-2-Basics
No?