Hello Harry J. Martin,
Thank you for reaching out to us on the Microsoft Q&A forum.
Based on your inputs, you are currently following this Learning Path.
- Learning Path: Introduction to version control with Git
- Module: How to create and modify a Git project
- Unit: 5 of 7 Exercise - Use Git to fix mistakes
Here are the screenshot instructions for creating a sandbox. You can easily follow these screenshots to activate Cloud Shell as outlined in the learn path.
Activate sandbox --> review permissions.
After accepting the permissions, you will be directed to the activated sandbox. There you go!
If the information is helpful, please accept the answer by clicking the "Upvote" and "Accept Answer" on the post. If you are still facing any issue, please let us know in the comments. We are glad to help you.
Thank you.