Method: how the lessons and calculators are built

Every lesson has one goal, one diagram or example, and three questions to test understanding. A lesson explains how something works; there is no promise of results and no call to buy any instrument.

Lessons are written from general sources on how markets and platforms work and are rechecked every quarter. The check date is printed in the head of each lesson.

Every calculator shows its formula in words and in numbers. The example answer is computed by the same code that recalculates in your browser, with no network call. The formulas are generic; they contain no figure from any broker.

Minutes, lesson order and counts are calculated by the site, not typed by hand. Diagrams are drawn without a price scale: the shape is the lesson.

The ticks in the study order are kept only in your browser. There is no account and no data is sent.