How are websites made?
A website is a set of files a browser can read. HTML is the structure (headings, paragraphs, buttons). CSS is how it looks (color, space, layout). JavaScript is how it reacts (clicks, forms, live data).
A web developer writes those files, puts them on a server, and connects them to a database when the site needs to remember users or orders. You do not need to know every tool on day one.
A useful first step is computer foundation (files, browser, folders), then HTML and CSS, then JavaScript. Infobag's web path follows that order.