This book is not like most other deep learning textbooks and tutorials - it does not contain detailed algorithmic analysis accompanied by extensive mathematics, nor extensive code listings. The author has chosen the golden mean - thanks to a friendly approach, accompanied by a huge number of color illustrations, as well as a detailed and scrupulous description, he deeply covers the fundamental ideas and fundamentals of blue learning and neural networks. The second volume is devoted to neural networks - a rapidly developing field of machine learning. The publication is intended for all readers who want to use deep learning and neural networks in your work.