If you stick to the setup approach in the videos (using the AMIs we created for the course) all the software will be the correct version to go with the notebook

If you stick to the setup approach in the videos (using the AMIs we created for the course) all the software will be the correct version to go with the notebooks and videos. If you try to use different versions of the software, it'll be a lot more work. CS231n is great and I'm glad you checked it out. There isn't really anything nearly as good online unfortunately for the other areas we covered (NLP, collaborative filtering, etc). CS231n is not as code-oriented as the fast.ai course, and doesn't try to get you to the point you can replicate state of the art results - but it's got great conceptual content and Karpathy is a terrific technical communicator. I think the two courses go hand in hand quite nicely!