Canonical have set up something called Canonical Credentials. This is what the web page says about Canonical Ubuntu Essentials:

Reliable, relevant, and convenient certifications provide the steps to your professional growth. Develop and certify essential skills on Ubuntu, the world’s most popular Linux OS. You choose the pace.
https://ubuntu.com/credentials

I might take this Quick Certification course. CUE.02 Desktop. I already know some of the answers.

https://ubuntu.com/credentials/exam-...E.02%20Desktop

The CUE.01 Linux will be harder I admit. And the third one CUE.03 Server is out of my experience range.

It is sometimes said: "You do not need to be crazy to work here, but it helps." Where I come from saying someone has been certified meant that they had been certified crazy.

I am beyond the age where passing examinations will help my career. No career ever again. But as a self learning tool these credentials could be very useful even if I am only able to obtain book knowledge of a subject and not practical knowledge.

Regards