The Testing track.

Selenium, Cypress and Playwright — flaky tests, waits and locators, fixed. Built as a curriculum — 3 chapters, recommended spine if you're new, side-quests when you're ready.

You'll cover: Selenium, Cypress, Playwright — then go deeper.

Start here: Selenium StaleElementReferenceException → Selenium ElementClickInterceptedException → Selenium NoSuchElementException — Waits, Not sleep() →