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This online course teaches intermediate techniques to transform table data in SQL.

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

Die Online-Kurse der KhanAcademy geben eine erste Einführung in die Programmierung für Anfänger. Enthalten sind die Sprachen JavaScript, HTML, CSS und SQL.

In this online course, Carlos Santana teaches how to play guitar. The course includes more than 10 video lessons and various supplemental materials.

In this online course, bestseller author James Patterson teaches the art of the book writing process. The course includes more than 20 video lessons and various supplemental...

Khan Academy provides various free introductory mathematics video lessons. Topics include elementary math, algebra, geometry, calculus, trigonometry, differential equations,...

In this online course, the founder of a successful "farm-to-table" restaurant chain teaches cooking with local, organic ingredients. The course includes more than 15 video...

This online course gives an introduction to jQuery (a JavaScript library).

Comprehensive language course in Swedish. 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 the use of Git, a source code management system for software development. It shows how to create and explore a simple Git-managed project.

This online course gives an introduction to SQL, the structured query language that is an important tool for business analysts, data analysts and data scientists.

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

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 photography, including digital photography, DSLR, portrait photography, composition, retouching,...

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

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

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

In this online course, Beatles drummer Ringo Starr shares his principles for creative collaboration, finding your unique playing style, and embracing your musical journey with joy.

This series of online courses explores the fundamental building blocks of data science, including statistics, data analysis, data visualization, programming with SQL and Python,...

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.