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TED Talks are videos from expert speakers on education, business, science, tech and creativity.

Learn math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more.

Offered by Google. Start your path to a career in project management. In this program, you’ll learn in-demand skills that will have you ... Enroll for free.

Learn how to use SQL to store, query, and manipulate data. SQL is a special-purpose programming language designed for managing data in a relational database, and is used by a huge number of apps and organizations.

Learn AP Computer Science Principles using videos, articles, and AP-aligned multiple choice question practice. Review the fundamentals of digital data representation, computer components, internet protocols, programming skills, algorithms, and data analysis.

SciStarter is a globally acclaimed, online citizen science hub where more than 3,000 projects, searchable by location, topic, age level, etc, have been registered by individual project leaders or imported through partnerships with federal governments, NGOs, and universities.

Videos all about computers and computer stuff. Sister channel of Numberphile.

"Coursera partners with more than 300+ leading universities and companies to bring flexible, affordable, job-relevant online learning to individuals and organizations worldwide. We offer a range of learning opportunities—from hands-on projects and courses to job-ready certificates and degree programs."