[Uptrenda]

Here's a good book on convolutional neural networks: http://www.deeplearningbook.org/ It's suppose to be like the bible on deep learning at the moment but like most cutting edge stuff -- you're going to have to put a lot of effort into thinking for yourself and reading a lot of papers to make any new progress.

[vonnik]

Here's a collection of free online resources, including Ian Goodfellow and Yoshua Bengio's excellent book: http://deeplearning4j.org/deeplearningforbeginners.html