If you are new to git in general, you should look for some online documentation, this post may result useful:
Also, you should check our submission criteria to accept commits in our training repos, others trainees usually face the same issues:
Finally, keep in mind that you need to be clear in your posts about the issues you are having, and provide enough information about the issue, check this post:
Feel free to navigate through the forum and repos, search other posts for answers and leave a reply or create a new thread if you have a specific doubt or issue about the training process
