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

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

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

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

This online course (part 2 of 2 courses) teaches how to build powerful interactive applications with this popular JavaScript library. React is an open source library developed...

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

Free Korean 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.

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

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,...

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

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

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

Khan Academy provides various free introductory video lessons on electrical engineering. Topics include circuit analysis, amplifiers, semiconductors, electrostatics, signals and...

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.

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

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

Free Romanian 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 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...