Which lesson 1 from fastai github?

Hi

I am just stepping in with Part 1. I tried to use kaggle, but the existing fastai course notebooks seem to be not compatable with latest fastai libraries. I got error importing at the very beginning.

Due to personal reasons, I am not using any pay service like paperspace but trying wtih Kaggle. I found a kernel with fastai lesson on here

Due to compatibility issue, I have to downgrade the fastai to 0.7.0 but this means turning off kaggle GPU at the moment else custom packages not allowed. The training process is painfully slow currently.

So I am thinking of using google colab. However, in fastai github I find multiple lessons as shown below.

What are these, and what should I take for custom installation in google colab?