Start with the topic guide.
HTML, CSS, JavaScript, URLs, HTTP, cookies, browser storage, the Document Object Model, browser rendering, event handling, the event loop, same-origin policy, cross-origin requests, and browser developer tools.
This is a learning outline. A complete worked tutorial has not been published for this topic yet.
Concept scope
Web & Browser Fundamentals: 14 short lessons, one for each concept. HTML, CSS, JavaScript, URLs, HTTP, cookies, browser storage, the Document Object Model, browser rendering, event handling, the event loop, same-origin policy, cross-origin requests, and browser developer tools.