Hi Olivier, great to know you're actively improving the tutorial!
Now that I checked the tutorial again, there seems to be a "Press enter to submit commands" help text before the command prompt. If you just added that, great, since that would have been my first suggestion anyway :)
As a developer using Git daily I can only guess what the most problematic parts of this tutorial are for beginners. I hope you get a lot of good feedback and data from all the people visiting the site!