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Clear explanations for the subjects that are actually hard
14 long-form guides written by teachers and tutors — reading comprehension, science, mathematics, writing, history, languages and revision technique. No sign-up, no paywall.
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Latest guides
How to Read a Hard Textbook Chapter Without Rereading It Five Times
A repeatable three-pass method for dense textbook chapters, plus how to tell the difference between reading and recognising.
Cornell, Outline, Mapping and Sketchnotes: Which Note Method Fits Which Class
The four common note-taking systems, what each one is actually good at, and how to pick based on how the class is taught.
Spaced Repetition, Explained Properly
Why reviewing at increasing intervals beats cramming, what the forgetting curve actually shows, and how to build a schedule without an app.
The Scientific Method as Scientists Actually Use It
Why the textbook flowchart is a simplification, what controls and variables really do, and how to design an experiment that answers something.
Cells and Energy: From Photosynthesis to ATP Without the Jargon Fog
A clear walk through how energy enters living systems, how it is stored, and why photosynthesis and respiration are two halves of one story.
Why Algebra Clicks Late, and How to Make It Click Sooner
The conceptual jumps that make algebra hard, and concrete ways to build the sense of what a variable and an equation actually are.
How to use this library
Every guide is written to stand alone. Start with the subject you are struggling with, read once for the shape of the idea, then come back a day later and try to explain it without looking. That single habit — retrieval instead of rereading — is the best-supported finding in the study-skills literature, and it costs ten minutes.