I know from:
- completing the 2022 Part 1 Course
- completing the Live coding walkthroughs
- forum participation
- its the most common question I see when people start extrapolating from Lesson 1.
Looking just now at the learner docs (I presume you mean Learner, Metrics, Callbacks – fastai)…
I actually have trouble parsing this section. It seems more to be documenting the internal representation than beginner usage. I’ve submitted a pull request for a small change that might assist. https://app.reviewnb.com/fastai/fastai/pull/3842/