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

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

This course teaches how to program in Ruby, a flexible language used to create many websites.

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...

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

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

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

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...

This collection of YouTube playlists provides an introduction to car technology for beginners. It includes several video lists on topics such as car engines, engine components,...

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

This course shows the basics of SQL data analysis to explore dips and spikes in data and build business metrics.

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...

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

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

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

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

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

Khan Academy provides various free introductory biology video lessons. Topics include acids and bases, properties of carbon, macromolecules, energy / metabolism, enzymes, cell...

Khan Academy provides various free lessons for learners who prepare for the SAT test.

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,...