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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,...

This course teaches how to program in C#, which is used for programming mobile applications, games and enterprise software.

Khan Academy provides various free introductory chemistry video lessons. Topics include atoms and compounds, chemical reactions, the periodic table, chemical bonds,...

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 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.

This online course gives an introduction to the C programming language. C is one of the foundational languages of computer science, for example used in operating systems. The...

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

This course teaches the use of Git, a source code management system for software development. It shows how to create and explore a simple Git-managed project.

In this online course, Michelin star-holding chef Thomas Keller teaches cooking. The course includes more than 30 video lessons and various supplemental materials.

This online language teaching method/app includes various languages, such as a German, English, Spanish, French, and Italian language course, and more.

Khan Academy provides various free introductory video lessons on electrical engineering. Topics include circuit analysis, amplifiers, semiconductors, electrostatics, signals and...

In this online course, star DJ Armin van Buuren teaches how to produce, perform and promote dance music. It includes using samples and plug-ins, mixing, recording vocals, and...

In this online course, Carlos Santana teaches how to play guitar. The course includes more than 10 video lessons and various supplemental materials.

In this online course, presidential campaign strategists David Axelrod and Karl Rove reveal what goes into effective political strategy and messaging. The course includes more...

This online course teaches the skills needed to create dynamic content by storing and retrieving data through the use of databases and files including CSV, XML and JSON.

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

These short online courses provided by Skillshare cover various topics around photography, including digital photography, DSLR, portrait photography, composition, retouching,...

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

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

This online course teaches front-end web development with JavaScript and ReactJS.