I’d look at the Walk with fastai2, if it’s a colab requirement, it’s geared around v2 and focuses on a Colab-Specific outlook. That being said, this should get better with the fact that WSL2 now supports GPU’s, so windows users with a decent GPU can follow the course along.
Perhaps since so many people use it, a big * should be put in front of the course bits that need widgets, however there was also some workarounds in getting a native Jupyter server running in the colab environment specifically (so now it’s just like any other server)
(See here: Platform: Colab ✅)
These should alleviate some of the frustration
Otherwise (Jeremy may add to this too), where and how things break would help us sort out how to fix it 
(If you can compile a list), though I believe there is no windows specific support for fastai2 at this moment IIRC