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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,...

In this online course, legendary chef Wolfgang Puck teaches cooking. The course includes more than 15 video lessons and various supplemental materials.

This advanced-level online lecture gives an introduction to gravitational waves in astrophysics.

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

In this online course, legendary Michelin chef Gordon Ramsay teaches the art of cooking. It includes topics such as a professional knife skills, how to break down a whole...

This online course teaches C# and .NET, which are open source and used across a wide variety of platforms and devices to create powerful, dynamic client and server applications...

This short online course explains the cosmic origin of the elements: The lighter elements were mostly produced in the Big Bang, and the rest were formed within stars and...

This series of online courses gives an overview of the fundamentals of programming and computer science. The courses explore what computer science is, how web development works,...

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

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

This is an online lecture taking a practical approach to proving problems can't be solved efficiently (in polynomial time and assuming standard complexity-theoretic assumptions...

In this online course, "Gangster Gardener" Ron Finley teaches gardening skills and techniques, including how to grow your own food, keep your plants alive, and find beauty and...

In this online course, Natalie Portman - who holds an Academy Award and two Golden Globe Awards - teaches acting.

This online lecture gives an introduction to Cyber-Physical Systems (CPS), combining cyber capabilities (computation and/or communication) with physical capabilities (motion or...

Topics covered in this online lecture (part 2) include the general formalism of quantum mechanics, harmonic oscillator, quantum mechanics in three-dimensions, angular momentum,...

In this online course, beauty industry icon Bobbi Brown teaches the tips, tricks, and techniques for applying simple, natural makeup. The course includes more than 15 video...

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 online video lecture series explores various technology trends and fields of innovation.

In this online course, Mariah Carey teaches how to use the voice as an instrument. The course includes several video lessons and various supplemental materials.

In this online course, professional skateboarder Tony Hawk teaches skateboarding skills and techniques.