Education
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365 Stories
Matt Zurbo's project of writing a new children's picture book every day for a year, with all 365 short stories free to r…
365Chess
A free searchable database of millions of historical and contemporary chess games, letting players study openings and fa…
3Blue1Brown
Grant Sanderson's home for visual mathematics, with animated lessons and interactive articles on linear algebra, calculu…
3D Game Shaders For Beginners
A step-by-step online guide to real-time shading techniques such as lighting, shadows, normal maps, ambient occlusion, r…
3D Programming Weekly
An archive of weekly 3D programming articles covering shaders, graphics math, and rendering techniques, a deep reference…
50 Years of Text Games
Companion site to Aaron Reed's book about the first half-century of interactive fiction, with one game per year examined…
507 Mechanical Movements
A table of contents for the classic collection of 507 mechanical movements, each illustrated with an animation of gears,…
52Kards
A resource for students of magic, with free videos and articles that teach card handling skills, sleights and tricks for…
555 Timer Circuits
A hobbyist reference to the classic 555 timer chip, with lessons on how it works and more than 80 buildable circuits lik…
6.191 Computation Structures
The MIT course site for Computation Structures, formerly 6.004, covering digital systems, computer architecture and the…
6.824 Distributed Systems, Spring 2014
The MIT 6.824 distributed systems course site from Spring 2014, with the lecture schedule, readings on classic systems p…
6.828 Operating System Engineering (Fall 2014)
MIT's Operating System Engineering course from Fall 2014, with lecture notes, readings, and hands-on kernel labs that te…
6502.org
A long-running reference site for the MOS 6502 microprocessor, with datasheets, assembly tutorials, and homebrew compute…
7000 Languages
A nonprofit building free online courses for endangered and under-resourced languages in partnership with the communitie…
80,000 Hours
A research nonprofit publishing in-depth guides on choosing a career that does the most good, grounded in effective altr…
84000
A nonprofit project making the Tibetan Buddhist canon freely available as readable English translations, with a growing…
88-108 MHz
A hobbyist reference to FM broadcast antennas, listing models from Antennacraft, Channel Master, Finco and more with per…
8notes
A sheet music site combining free scores with lessons and exercises across genres, aimed at beginner and intermediate pl…
9/11 Memorial & Museum
The official memorial and museum for the September 11 attacks, sharing survivor stories, artifacts, and the day's timeli…
911Tabs
A search engine for guitar, bass, drum, and piano tabs and chords that indexes millions of tabs across the web, handy wh…
99% Invisible
Stories about the unnoticed design and architecture that shape the world around us.
A Beginner's Guide to Cantonese Grammar
A structured set of lessons on Cantonese grammar for beginners, written by Jason Tang, explaining how sentences work in…
A Blast From The Past
A history blog by the author of Batavia's Graveyard, full of oddities, striking characters and strange days, with the in…
A Box of Letters
Over 100 letters found in a Vancouver storage box, written between Sam and Dora Diamondstein from 1901 to 1926, half in…
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