Hello @Alessandro Tripodi
Microsoft Certification Program and MS Learn are supported on their own forums. Please post your issue there so that you can get quick help (Participate\Ask A Question)
Ask the Microsoft Learning Community
Microsoft Learn
You can also browse and select paths here.
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Introducing Microsoft.com/Learn
A Tour of Microsoft Learn
Thank you so much for asking issue here, I hope this helps.
Regards,
Yutong
-Please kindky accept the answer if you feel helpful to support this community, thanks.