It’s no secret that URLs sometimes don’t work. Maybe you wrote it down incorrectly or perhaps the URL has been changed since you received the link. Sometimes long URLs break when sent via email.
Never fear. With a little knowledge of how URLs work, you can often deconstruct the URL to find the page you need. To that end, the search experts at Eipert Information Services have prepared a two part guide to understanding URLs.
Source: inter alia