This document provides code examples for common web development tasks in Ring programming language like handling HTTP GET and POST requests, file uploads, cookies, and URL encoding. It includes code for a page that displays user data passed via GET parameters and allows editing text fields to send via POST. Another example shows uploading files and saving them to a folder while displaying download links. Cookies are demonstrated by setting values on one page and retrieving them on another. Lastly, it shows how to URL encode special characters when building query strings.