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

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

This online course teaches how to publish a personal website to the public Internet.

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

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

This online course gives an introduction to Alexa, the Voice User Interface (VUI) application by Amazon.The course shows how to build a simple interaction model that responds to...

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

This online course gives an introduction to Swift, a programming language developed by Apple for iOS and macOS.

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

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

This online course teaches how to build powerful interactive applications with this popular JavaScript library. React is an open source library developed by Facebook.

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...

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

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

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

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

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

Khan Academy provides various free introductory programming video lessons. Topics include JavaScript, HTML and CSS, SQL, and more.

This series of short YouTube video lessons explains the basic fundamentals of automotive engineering for beginners. It includes topics like engines, gearbox, transmission, and...