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

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 course teaches how to program in PHP, which is one of the most popular languages of modern web development.

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...

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 style websites with CSS.

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 Hungarian 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.)

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

Khan Academy provides various free introductory mathematics video lessons. Topics include elementary math, algebra, geometry, calculus, trigonometry, differential equations,...

Free French 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 teaches how to program in R, which is a popular language used by data scientists and researchers.

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

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

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

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

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

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...