Thank you very much for this fascinating post, nice work.
Did you use any other resources to learn about deep learning besides http://course.fast.ai/? I'm looking to get started learning, and wondered what the best way forward would be.
That was my starting point but I'd already played with neural nets when they first came out so that helped and I also did a lot of opencv stuff without any neural nets.
After that it was mostly googling each and every term that I didn't understand until it all started to make sense.
course.fast.ai is probably the fastest way to get something concrete going which is very useful if you need that instant gratification kick to keep going.
Another path: start doing Kaggle. Pick whatever competition looks interesting to you and just join in. In worst case you will learn a lot, and there will be people working on the same problems as you will.
EDIT: but some initial level of knowledge is advisable so you know how to pick a competition.
Did you use any other resources to learn about deep learning besides http://course.fast.ai/? I'm looking to get started learning, and wondered what the best way forward would be.