I really liked Geoff Hinton's Neural Networks for Machine Learning (https://www.coursera.org/learn/neural-networks https://www.coursera.org/learn/neural-network

I really liked Geoff Hinton's Neural Networks for Machine Learning (https://www.coursera.org/learn/neural-networks https://www.coursera.org/learn/neural-networks). It goes into a lot of depth (much more so than Andrew Ng's Machine Learning course) and is fairly challenging.