First of all, he has video tutorials. Let’s face it you can’t beat video tutorials: you can stop, rewind, scrub the play head, and follow right along with the teacher as they demonstrate and explain the process.
Secondly, he has articles that give further depth and insight into DNN and usually has one to accompany each video lesson.
Thirdly, he provides free source code to practice with or use that he used in the video tutorials.
Fourthly, he interviews industry leaders to learn their tricks.
Finally, he’s a very good teacher: he’s attentive to the details and doesn’t just graze over steps, he's knowledgeable of best practices and industry standards, he provides excellent tips and techniques and occasional DNN hacks, and he’s got a charming British accent that sticks in your head.
He dissects complex aspects of Professional DNN development into step by step video tutorials that anybody can follow. There’s no better way to learn DNN.