In case it's of interest, we wrote a system for converting Jupyter Notebooks to asciidoc, which we used to publish an O'Reilly book.

This is the book: https://www.amazon.com/Deep-Learning-Coders-fastai-PyTorch/d...

This is the nb->asciidoc convertor: https://github.com/fastai/fastdoc

These are the source notebooks: https://github.com/fastai/fastbook/

I do recommend getting the book that just came out (I did, it is fantastic)

https://www.amazon.com/Deep-Learning-Coders-fastai-PyTorch/d...

that said: fast.ai also released a draft of the book available here (including the notebooks) https://github.com/fastai/fastbook

edit: if you can afford it, getting the book is a great way to support the authors