Ng's course is bottom up: Start with the basic math, expand upon it, until you arrive at ML and neural nets. Fastai is top down: learn to use practical ML with

Ng's course is bottom up: Start with the basic math, expand upon it, until you arrive at ML and neural nets. Fastai is top down: learn to use practical ML with abstractions, and then dig deeper and explain as needed. I preferred fastai's approach, even though I enjoyed both. Ng's could be a bit too low level and fundamental for what I wanted to learn.