I learned a lot from participating in the webinar and even took the course afterward. I managed to get my GAIQ in one go, but I felt like I wouldn't have much to say if I were asked in an interview whether I actually know how to use GA, so I'm going through it again with the lectures. Since I've at least tried installing and setting up GA and Google Tag Manager myself, I think I'll have something to talk about if GA-related questions come up during an interview.