HTTP, Explained - the language the web speaks

What HTTP actually is: every time you load a page, your browser sends a request and a server sends a response. This guide makes that conversation - methods, status codes, headers, cookies, and the S in HTTPS - finally make sense.

1. Request & Response - the core model The whole of HTTP is one pattern: the client sends a request, the server sends a response. This phase shows that exchange annotated, then breaks down a URL into its parts - scheme, host, path, and query.
2. Methods & Status Codes - the verbs and the replies The four everyday HTTP methods (GET, POST, PUT, DELETE) and what each one means, plus the four families of status codes (2xx success, 3xx redirect, 4xx your fault, 5xx server's fault) and how to read any code calmly.
3. Headers, Cookies & the S in HTTPS The extra notes every HTTP message carries (headers - content type, authentication, and more), how cookies let a site remember who you are, and what the S in HTTPS actually buys you: encryption so others can't read or tamper with the conversation.