CatNav

提供了编程的基础技术教程, 介绍了HTML、CSS、Javascript、Python，Java，Ruby，C，PHP , MySQL等各种编程语言的基础知识。 同时本站中也提供了大量的在线实例，通过实例，您可以更好的学习编程。

提供了编程的基础技术教程, 介绍了HTML、CSS、Javascript、Python，Java，Ruby，C，PHP , MySQL等各种编程语言的基础知识。 同时本站中也提供了大量的在线实例，通过实例，您可以更好的学习编程。

A professional W3C front-end development and programming introductory learning platform, providing online tutorials and user manuals including HTML, CSS, Javascript, jQuery, C, PHP, Java, Python, Sql, Mysql and other programming languages and open source technologies.

IT skills learning platform, the course involves 60 mainstream technical languages such as JAVA, front-end, Python, big data, etc., covering interview employment, career growth, self-improvement and other demand scenarios, helping users to achieve a closed-loop ability from skill improvement to job improvement.

Provide the most complete and up-to-date programming basic tutorials, introducing the basic knowledge of the Internet such as html, css, js, etc., as well as PHP, MySQL, WebRTC, WebGL, WeChat applet, Unity, Thymeleaf, CodeIgniter4, Angular, ElasticSearch7 and other tutorials and experiences.

The leading online practical skills video learning platform in China. There are 3D tutorials, graphic tutorials, multimedia production tutorials, office informatization tutorials, mechanical design tutorials, website production tutorials, computer training and other tutorials.

提供设计类的免费教程，如Photoshop、CINEMA 4D、illustrator、Sketch等

It brings together more than 1,000 courses from Tsinghua University, Peking University, Harvard, Yale and other world-renowned universities, covering 22 fields such as science, economics, humanities, and philosophy

A Wikipedia-style online guide platform with thousands of easy-to-follow guides on living, working, studying, and more, covering a variety of topics and areas. Users are free to view, edit, and create guides that provide useful information and knowledge to other users. The platform is dedicated to helping people solve problems and making knowledge sharing easier and more convenient.

Duolingo is one of the most popular language learning platforms in the world, and unlike our usual boring way of learning a foreign language, Duolingo offers a new way to learn a foreign language in a fun and educational way, allowing you to learn a foreign language as if you were playing a game, mastering new words, phrases and grammar as you play.

Founded in 1999, the world-renowned Chinese IT technology exchange platform includes original blogs, high-quality Q&A, vocational training, technical forums, resource downloads and other products and services, providing original, high-quality, and complete content of professional IT technology development communities.

A self-learning platform trusted by more than 18 million users, with a large number of high-quality high-definition tutorial videos such as design, painting, photography, office software, professional skills, etc., users can choose their own learning content according to their industry and interests, and learn one tutorial for free every day.

Provide various learning courses for you to achieve online self-learning, a learning platform for self-improvement.

The online education platform jointly launched by iCourses and NetEase provides a large number of free courses from universities at home and abroad, including computer science, foreign language learning, humanities and social sciences and other fields. The platform adopts self-developed technology and supports a variety of learning modes and interactive methods, allowing students to acquire knowledge and improve their abilities in a flexible and independent learning environment.

Integrate and coordinate industry chain resources, provide global platform services for Huawei mobile device developers, help developers in all aspects of development, testing, promotion, and monetization, encourage innovation, provide platform resource support, and work with developers to create an excellent user experience for Huawei end consumers.

The world's largest and most trusted online community for developers to learn, share coding experiences, and build careers online is the Zhihu and Wikipedia for programmers.

China's leading developer technology community. With technical Q&A, technical columns, technical courses, and technical information as the core of the product form, it provides developers with a pure and high-quality technical exchange platform.

PHP official website, PHP is a popular general-purpose scripting language that provides support for everything from blogs to the world's most popular websites.

China's leading professional website for C language programming, providing classic tutorials for C language introduction, C language compiler, C language function manual, C language programming skills, C language exam questions, etc., is a good helper for learning and self-learning C language programming.

A technical content sharing and communication platform for global Chinese developers. Through technical articles, boiling points, courses, live broadcasts and other products and services, we create a comprehensive technical community that inspires developers to create, encourages developers to precipitate and share, and accompanies developers to grow.

An online education platform for art and design, a brand of Zhanku. Provide professional courses and services in the fields of photography, design, painting, film and television, and 3D. Whether you are a zero-based design enthusiast, a newcomer to the industry, or a self-driven advanced design practitioner, you can pass more than 3,000 all-inclusive online courses.

An online self-learning platform focusing on design training, committed to creating a full range of self-learning content from theory to the workplace for every user, the website currently provides indoor, graphic, e-commerce, UI, film and television, workplace office and other boutique design video tutorials, for every learner who loves design and wants to learn practical skills, provides intimate one-stop learning services.

Provide a large number of free, original, high-definition PHP video tutorials, and regularly hold public welfare PHP training! You can modify the sample code online while learning to see the execution effect! PHP from beginner to proficient, one-stop PHP self-learning platform!

The content of the resources is reviewed by People's Daily Online.