I have a good Python experience. I did basic backend dev with PHP and Flask before, so the beginner concepts won't be that much challenging. What I'm looking for is a single well-organized course to learn FastAPI deeply. I've checked out the official documentation, which is absolutely great and lovely, and I will use that as a reference.

It doesn't matter if the course is certified or not. I focus on the skills I'll gain. It's more preferred to be a free course though (but don't hesitate to share paid courses too if they are really worth paying for).