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

This online lecture series gives an introduction to galaxies and cosmology. It includes the Milky Way and the Local Group as well as larger-scale structures of the universe.

In this online course, "Watergate" reporter Bob Woodward teaches investigative journalism. The course includes more than 20 video lessons and various supplemental materials.

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

This online lecture covers elementary discrete mathematics for computer science and engineering.

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

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

This online video lecture series explores various topics of human-computer interaction.

This course teaches how to use the command line to manipulate data and automate tasks.

This online lecture covers the Internet of Things (IoT), which basically means that virtually every thing can also feature tiny computers that are connected to the Internet.

This online course teaches basic computing principles and foundational knowledge of the Internet and World Wide Web for absolute beginners.

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

In this online course, Hillary Rodham Clinton shows how to overcome setbacks and build a life of principle and purpose.

This online video lecture gives an introduction to the philosophy of economics.

This online course covers matrix theory and linear algebra, emphasizing topics useful in other disciplines such as physics, economics and social sciences, natural sciences, and...

This online lecture series gives an introduction to international relations. It includes theoretical foundations (such as realism, liberalism, marxism and constructivism) as...

This online course gives an introduction to core microeconomic issues in economic development, focusing on both key theoretical contributions and empirical applications to...

This online course teaches how to create websites by structuring the pages with HTML.The course is designed for beginners and includes HTML elements and structures as well as...

Khan Academy provides various free introductory computer science video lessons. Topics include algorithms, cryptography, information theory, computer hardware and software,...

This online lecture focuses on the equations and techniques most useful in science and engineering.