Thanks @Juhi Poddar - I should have mentioned that micro-cert in my earlier answer to @Prasanna_Patil, but didn't because it's a very basic, 20-minute course plus exam.

In fact, here's what the intro to the course says: 

"Note: this is an introductory, conceptual, course. You will NOT be a Gen AI expert after taking it. However, you may win trivia games that have a Gen AI category. There are no hands-on labs for it. Once you've completed it, take some of the other free Now Assist courses available in Now Learning for more advanced concepts and hands-on labs."