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

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

This course teaches how to program in C++, which is a language well-respected for its flexibility and low-level functionality. It is used in the development of operating...

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

This online course teaches the fundamental concepts of Blockchain and how to implement them in Python. Learners with prior Python experience will be able to build their own...

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

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

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

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

This online course introduces learners to the basics of Lua, a general-purpose programming language used for building games, web apps, and developer tools.

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

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

Khan Academy provides various free introductory video lessons on health and medicine. Topics include human anatomy and physiology, circulatory system diseases, mental health,...

This online course gives an introduction to artificial intelligence and deep learning for programmers.

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

Khan Academy provides various free introductory art history video lessons. Topics include prehistoric art, ancient mediterranean art (Egypt, Greece, Rome and others), medieval...

This course teaches how to program in Go (Golang), an open-source programming language supported by Google.

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

Khan Academy provides various free introductory video lessons on the history of the United States.