Fantastic initiative. It's amazing how much CERN has contributed back to society over the years...

I very much like Michael Nielsen's book Neural Networks and Deep Learning. It has a great introduction with examples and code you can run locally. Really nice to get started. http://neuralnetworksanddeeplearning.com

Also Fermat's Library is going to be annotating the book, which should make it even more accessible: http://fermatslibrary.com/list/neural-networks-and-deep-lear...