These docs will help you with your python coding.
If you are using a trackpad, navigate to various sections and pages by clicking on a heading and then use the arrow keys to move up and down.
1.2. Home pages:
microbit extension: https://pc-microbit-extension.readthedocs.io/en/latest/index.html
app development: https://pc-app-development.readthedocs.io/en/latest/index.html