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Khan Academy provides various free introductory video lessons on astronomy and cosmology. Topics include the scale of the universe, the Big Bang, stars, black holes, galaxies,...

In this online course, Mariah Carey teaches how to use the voice as an instrument. The course includes several video lessons and various supplemental materials.

This online course gives an introduction to the programming language Ruby.

This course teaches how to build web apps with Ruby on Rails 4, giving learners the skills to use Ruby on Rails to create their own apps.

In this online course, legendary chef Wolfgang Puck teaches cooking. The course includes more than 15 video lessons and various supplemental materials.

In this online course, former CEO of PepsiCo Indra Nooyi teaches how to think big, be brave, and make purpose-driven changes at work. The course includes more than 20 video...

This online course gives an introduction to the Bootstrap framework.

This online course gives an introduction to Kotlin, a popular programming language for Android development, web development, and more.

Free Danish language app with many short tests to learn "on the go". (Not a video course.)

This series of online courses gives an overview of the fundamentals of programming and computer science. The courses explore what computer science is, how web development works,...

This online course explores the fundamentals of JavaScript, the programming language of the Web.The course was designed for learners who have some knowledge of HTML and CSS and...

This online course teaches SCSS syntax, nesting, functions, and more regarding the Sass styling language.

In this online course, the founder of a successful "farm-to-table" restaurant chain teaches cooking with local, organic ingredients. The course includes more than 15 video...

This online course gives an introduction to the programming language Java. It includes 8 lessons covering the fundamental syntax as well as objects, strings, data structures and...

This series of online courses explains the role of testing in web development. Participants will build a testing suite for a full-stack web application.

This online course teaches how to build powerful, dynamic websites and web applications using the popular ASP.NET MVC web framework.

In this online course, Oscar winner Martin Scorsese teaches filmmaking. The course includes more than 20 video lessons and various supplemental materials.

Comprehensive language course in Hebrew. The idea of this course is to learn the language "like a native". This means that the course creates an immersive learning experience...

Comprehensive language course in Turkish. The idea of this course is to learn the language "like a native". This means that the course creates an immersive learning experience...

This course teaches how to add sign up, log in, and log out functionality to Rails apps, as well as how to manage access to specific pages.