Sure, go through the fastai material and maybe write a blog post about how you learned ML (read: DL) in a few months. What you really learned is copy-pasting code (as you mentioned) and some neural net tricks (like a good learning-rate to start SGD).

How to learn ML? Do fastai + reading Daphne Koller's and Chris Bishop's books on PGMs + re-implementing a paper on Gaussian process classification + another paper on GNNs + ....