Did you learn before, after, or during your 1st research job?
Certainly no one learns before their first gig, but in my experience "research" isn't a static thing. It's extremely dependent on the lab, area of focus, and of course clinical vs. basic science work. For example, I fully expect what I'm doing in med school to be different than the projects I was working on as an undergrad, and therefore need to learn a lot of new things.