You should read the Submission Guide in that guide you can found all things related to the challenges, you should know how to use git because is the way to upload all solutions, if you have any other question related to the training stage please use the template that we have to questions related to that.
For post things related to challenges/immersion we create a template, you can see it in this post:
And please take a look at this too:
If you want to ask anything related to the challenges please follow the template, with that way you can give us more details and help us to understand what happens and how to solve it.
How the thread is non-compliant with the template I proceed to close it and wait until become compliant with the template.