Tutorials & How-To
71 sites
https://alothman-b.tripod.com/
Buthaina Al-Othman, an EFL/ESP instructor at Kuwait University, maintains this professional hub for her English language teaching courses including remedial, scientific, legal, and engineering English. The site features student projects, useful links for language learners, TESOL professional development resources, and archives of her presentations with the Webheads community spanning over a decade.
https://sciencespot.net/Pages/classphys.html
The Science Spot is a physics lesson plan resource created by Tracy Tomm, a former science teacher at Havana Junior High in Illinois, offering classroom activities like Rube Goldberg projects, Newton's Challenge, and projectile motion labs. Developed since 1999, the site provides downloadable worksheets, digital lessons, and curated links aimed at helping middle and high school science teachers bring hands-on STEM concepts into their classrooms.
https://austinhenley.com/blog/cosine.html
Austin Z. Henley, an Associate Teaching Professor at Carnegie Mellon University, dives deep into implementing the cosine function in C from scratch without relying on math.h, exploring several approaches including Taylor series, lookup tables, and bit manipulation. The post includes performance benchmarks, accuracy comparisons, and code samples, and became popular enough to be discussed multiple times on Hacker News and Reddit.
https://ldjb.jp/full-resolution-line-sticker-images
Leon Byford, a London-based software developer, shares a concise technical tutorial on how to download full-resolution LINE sticker image files directly from LINE's servers using product IDs. The post covers both static and animated sticker formats, including tips for Mac users and how to convert APNG files to animated GIFs.
http://ruby-doc.org/docs/ruby-doc-bundle/Tutorial/part_01/objects.html
A beginner-friendly Ruby programming tutorial that introduces core concepts like objects, classes, and methods using clear tables and plain-language comparisons to familiar ideas. Hosted on ruby-doc.org, this lesson walks newcomers through Ruby's type system, class notation conventions, and type conversion methods with concise code examples.
https://thistothat.com/
This to That is a practical reference tool that tells you exactly which adhesive to use when bonding any two materials together, covering combinations of ceramic, glass, metal, wood, rubber, vinyl, and more. Running since 1999, the site includes extras like glue trivia, a Glue of the Month feature, and an FAQ, making it a surprisingly charming and genuinely useful niche resource.
https://drububu.com/tutorial/index.html
Created by Arjan Westerdiep, this comprehensive pixel art tutorial covers everything from basic concepts to advanced techniques including scaling, pixel fonts, voxels, isometric art, and converting pixel art to vector formats. Step-by-step examples, how-to videos, and tool-specific guides for Microsoft Paint, Photoshop, and Illustrator make it an invaluable reference for anyone learning pixel art.
https://ntsc-tv.com/
A deep-dive technical tutorial site covering every aspect of NTSC color television, from scanning and sync to color encoding, digital TV graphics, and VCR circuits. With over 300 URLs spanning 90 subjects, it walks through the full signal chain from antenna to CRT with historical context including the original 1953 NTSC standards.
https://homeschoolersresources.blogspot.com/p/physical-science.html
Marty's homeschool resource page compiles links, videos, lab reports, and module-by-module guides for Apologia's Physical Science curriculum, aimed at parents teaching their kids at home. Each module is broken out individually with supporting materials covering topics like the scientific method, lab notebooks, and hands-on experiments.
https://sandradodd.com/
Sandra Dodd's expansive personal site is a deep resource on radical unschooling, offering thousands of short inspirational posts, essays, interviews, and interlinking pages designed to guide parents and learners toward child-led, curiosity-driven education. With books, audio files, a daily inspiration feed called 'Just Add Light and Stir,' and years of accumulated writing, it reads like a passionate lifelong mission to rethink how children learn.