What are some good textbooks for ML? • /r/MachineLearning

What are some good uni level textbooks to learn the underlying fundamentals and architecture or functions of GPU based deep learning or AI development as shown In GTC Europe recently, I want to use the Dev kits like tensor flow or MS CTNK (I do prefer the CTNK because of it's scalability and flexibility) with Nvidia's GPU acceleration to develop new Cognitive Applications based on Deep learning and AI but before I do that I want to understand the underlying processes and architecture to properly understand what's going on and what I'm doing.