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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 online course teaches how to use Java to build mobile apps for Google’s Android operating system.

This online course teaches how to design, build and deploy websites from scratch using HTML, CSS, JavaScript, and Github.

Khan Academy provides various free introductory microeconomics video lessons. Topics include supply, demand, market equilibrium, scarcity, preferences, consumers and producers,...

This course teaches how to build four webpages from scratch while learning web development fundamentals.

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

In this online course, Frank Gehry teaches his philosophy on architecture, design and art. The course includes more than 15 video lessons and various supplemental materials.

This online course teaches web development based on the Ruby on Rails framework.

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

These online lessons explain the basics of anatomy. In addition to the free video lessons, further (paid) trainings are available.

Die Online-Kurse der KhanAcademy geben eine erste Einführung in die Programmierung für Anfänger. Enthalten sind die Sprachen JavaScript, HTML, CSS und SQL.

This course teaches how to build web apps using AngularJS 1.x, enabling learners to use AngularJS to create their own apps.

This online course gives a free introduction to digital currencies such as Bitcoin. It is also the first course of an online master's program in digital currencies from the...

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...

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

In this non-technical online course for a broad audience, the former commander of the International Space Station (ISS) teaches the science of space exploration. It includes...

This online course teaches how to manage data with SQL, including mastering complex commands to manipulate and query data stored in relational databases. It includes topics such...

In this online course, Nobel Prize-winning economist Paul Krugman teaches the economic theories that drive history and policy. The course includes more than 20 video lessons and...

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