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

Khan Academy provides various free introductory video lessons on health and medicine. Topics include human anatomy and physiology, circulatory system diseases, mental health,...

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

This course teaches how to program in Ruby, a flexible language used to create many websites.

Khan Academy provides various free lessons for learners who prepare for the SAT test.

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

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

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

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

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

This online course teaches how to manage data with SQL, including mastering complex commands to manipulate and query data stored in relational databases. It includes topics such...

Khan Academy provides various free introductory microeconomics video lessons. Topics include supply, demand, market equilibrium, scarcity, preferences, consumers and producers,...

This online course includes various free introductory history video lessons. Topics include:The beginnings and the neolithic revolution; Ancient civilizations in...

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...

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

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

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

This series of short YouTube video lessons explains the basic fundamentals of automotive engineering for beginners. It includes topics like engines, gearbox, transmission, and...

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