Free Sample Chapters

Learn C from your very first program to real working projects. This complete beginner's guide covers variables, operators, control flow, functions, arrays, strings, pointers, dynamic memory, structures, file handling, and debugging—with clear explanations and hands-on practice throughout.

Learn Git and GitHub from scratch with a clear, beginner-friendly guide. Understand version control, repositories, commits, branches, and collaboration step by step-no prior experience required.

Master Visual Studio Code and boost your productivity. Learn editing, debugging, extensions, Git integration, and remote workflows with practical, real-world examples for developers and IT professionals.

Demystify hash functions from first principles to real-world mastery. Understand the properties behind MD5, SHA-256, SHA-3, and BLAKE3; hash passwords securely; verify data integrity; build hash tables; and grasp hashing in blockchain—with hands-on Python, JavaScript, and Java examples.