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In this online course, Usher teaches the art of performing in front of an audience. The course includes ca. 15 video lessons and various supplemental materials.

In this online course, popular astrophysicist and scientist Neil deGrasse Tyson teaches scientific thinking and communication.

In this online course, Chris Voss (a former FBI kidnapping negotiator) teaches how to negotiate. The course includes more than 10 video lessons and various supplemental materials.

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

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

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

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

This series of online courses explores the fundamental building blocks of computer science, including programming, development, algorithms, and data structures. The program...

Comprehensive language course in Greek. The idea of this course is to learn the language "like a native". This means that the course creates an immersive learning experience...

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.

In this online course, NBA champion Stephen Curry teaches basketball. The course includes more than 15 video lessons and various supplemental materials.

In this online course, writer David Mamet teaches the art of dramatic writing. The course includes more than 20 video lessons and various supplemental materials.

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

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

Comprehensive language course in Hindi. The idea of this course is to learn the language "like a native". This means that the course creates an immersive learning experience...

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

In this online course, six-time World Series of Poker champion Daniel Negreanu teaches advanced poker theory and practice through hand-reviews of his winning games. The course...

This course teaches how to style websites with CSS.

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