...It introduces deep learning and PyTorch progressively for readers who do not already have machine-learning experience. Topics begin with PyTorch fundamentals and tensors before moving into representing real data, learning mechanisms, and neural-network fitting. The repository includes runnable code associated with the translated chapters. Documentation is maintained in Markdown and published through Docsify for convenient browser reading. It is intended as a compact introduction for readers with basic Python and foundational mathematics who want practical exposure to PyTorch.