Can you suggest some of the best resources to get started in it?
Also, it would be great if you could list the main topics/areas/ideas of DL, so that I would have the general framework for studying, and know what do I need to learn and in what order.
Im sure that would be useful for a lot of people here.
My tentative plan is to start with Coursera's Neural Network course and implement as many things as possible (probably in Python) along the way. By the end of 2015, I'd like to build a deep learning application from scratch that does something interesting.
While online resources will likely be my primary source of information, I'd love to have a study partner (or partners) to discuss concepts and bounce ideas off of. If OP or anyone else is interested, drop me a note at email@example.com and we'll figure out the best way to do that.
edit: here's the ebook link neuralnetworksanddeeplearning.com