test your javascript, css, html or coffeescript online with jsfiddle code editor.

stackblitz is the collaborative browser-based ide for web developers. stackblitz eliminates time-consuming local configuration and lets developers spend more time building.

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

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.

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.

modern javascript tutorial: simple, but detailed explanations with examples and tasks, including: closures, document and events, object oriented programming and more.

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.

learn to code — for free

angular lets you start small and supports you as your team and apps grow.

tutlane offers tutorials for asp.net mvc, angularjs, linq, sql server, android, ios, python, java, mvc, perl, php, mysql,sqlite, vb.net, vb, vba, jquery, javascript, jqueryui, ajax, etc.