free comprehensive online tutorials suitable for self-study. an online course full of hands-on exercises and solutions.

github is where over 100 million developers shape the future of software, together. contribute to the open source community, manage your git repositories, review code like a pro, track bugs and features, power your ci/cd and devops workflows, and secure code before you commit it.

stack overflow is the largest, most trusted online community for developers to learn, share​ ​their programming ​knowledge, and build their careers.

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a computer science portal for geeks. it contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview questions.

well organized and easy to understand web building tutorials with lots of examples of how to use html, css, javascript, sql, python, php, bootstrap, java, xml and more.

design patterns and refactoring articles and guides. design patterns video tutorials for newbies. simple descriptions and full source code examples in java, c++, c#, php and delphi.

tutorials point is an online learning platform providing free tutorials, paid premium courses, and ebooks. learn the latest technologies and programming languages sql, mysql, python, c, c++, java, python, php, machine learning, data science, ai, prompt engineering and more.

zetcode provides accessible tutorials for c#, go, python, java, and javascript programming languages.

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