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Khan Academy provides various free introductory macroeconomics video lessons. Topics include national income and the GDP, inflation, demand and supply, business cycles, the...

This online course shows how to use IBM's Personality Insights API and interact with Twitter; participants should be familiar with Python for this 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...

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

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...

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

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

This online course gives an introduction to Kotlin, a popular programming language for Android development, web development, and more.

This course teaches how to add sign up, log in, and log out functionality to Rails apps, as well as how to manage access to specific pages.

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,...

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

Khan Academy provides various free introductory physics video lessons. Topics include velocity and acceleration, forces and Newton's laws of motion, gravitation, energy,...

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

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

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 lessons for learners who prepare for the MCAT test.

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

This online course teaches how to use color effectively to create attractive and useable websites.

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

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