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This online lecture series gives an introduction to Greek history. It traces the development of Greek civilization as manifested in political, intellectual, and creative...

This online language teaching method/app includes various languages, such as a German, English, Spanish, French, and Italian language course, and more.

This online lecture gives an overview of scepticism in the context of Jewish philosophy.

This online lecture series introduces some of the important model systems studied in contemporary physics, including two-dimensional electron systems, the fine structure of...

This video lecture discusses the computational complexity theory, including the Chomsky hierarchy, (un-) decidability,SPACE versus TIME, EXPSPACE and more advanced topics.

This online lecture series explores the science of the Covid-19 pandemic.

This online video lecture provides a historical study of the origins of Christianity by analyzing the literature of the earliest Christian movements in historical context,...

Khan Academy provides various free introductory video lessons on the history of the United States.

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

This online lecture series gives an introduction to design thinking. The main focus of the lectures is the theoretical background of design thinking, including the relevant...

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

This online video lecture series gives an introduction to Artificial Intelligence (AI).

This lecture series focuses on the "emerging field" of "Quantum Geometry". Here, the expertise of both mathematicians and physicists are brought together in order to make...

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.

This online lecture aims to help students acquire both the mathematical principles and the intuition necessary to create, analyze, and understand insightful models for a broad...

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

These short online courses provided by Skillshare cover various topics around web design / UX / UI, including the details of user experience and user interface, prototyping,...

This course is intended to provide an up-to-date introduction to the development of English society between the late fifteenth and the early eighteenth centuries.

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

This online lecture is an introduction to several fundamental ideas in electrical engineering and computer science, using digital communication systems as the vehicle.