Hi Luca,
We have lots of ways for you to learn about the various features of Cisco DNA, even if you don't have a fabric. There is Software Image Management (SWIM), Device Onboarding (Plug and Play), Config Automation, and Network Assurance (health monitoring)
To learn more, check out this:
https://www.cisco.com/c/m/en_us/products/cloud-systems-management/dna-center/getting-started.html
And sign up for some Ask The Expert Webinars, given by our Customer Experience team:
https://learningnetwork.cisco.com/community/learning_center/cisco-dna-ask-the-experts
-Preston
Cisco Customer Success Specialist
Customer Experience