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This online lecture discusses various aspects around internet security. After a brief introduction to the structure of the internet, problems such as hackers and viruses, the...

This online lecture series gives an introduction to galaxies and cosmology. It includes the Milky Way and the Local Group as well as larger-scale structures of the universe.

In this online course, Oscar winner Martin Scorsese teaches filmmaking. The course includes more than 20 video lessons and various supplemental materials.

This online course teaches how to create websites by structuring the pages with HTML.The course is designed for beginners and includes HTML elements and structures as well as...

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

These short online courses provided by Skillshare cover various topics around freelancing, including social media businesses, marketing, sales, business fundamentals, and...

This online course teaches how to build powerful interactive applications with this popular JavaScript library. React is an open source library developed by Facebook.

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

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

In this online course, legendary producer "deadmau5" (Joel Zimmerman) teaches the art of producing electronic music. The course includes more than 20 video lessons and various...

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 lecture gives an introduction to the architecture of supercomputers.

This is a continuation of Freshman Organic Chemistry I, the introductory video lecture on current theories of structure and mechanism in organic chemistry for students with...

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

In this online course, former CEO of PepsiCo Indra Nooyi teaches how to think big, be brave, and make purpose-driven changes at work. The course includes more than 20 video...

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

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

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

This online lecture about transportation analysis uses modeling and simulation to address the mathematical background while modeling transportation system scenarios such as...

This online course gives an introduction to the programming language Ruby.