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

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

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.

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,...

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

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

This online course teaches intermediate techniques to transform table data in SQL.

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

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

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.

This online course gives an introduction to jQuery (a JavaScript library).

Khan Academy provides various free introductory microeconomics video lessons. Topics include supply, demand, market equilibrium, scarcity, preferences, consumers and producers,...

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

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

This course teaches how to build four webpages from scratch while learning web development fundamentals.

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

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 cross sections in anatomy. In addition to the free video lessons, further (paid) trainings are available.

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