Open Safari and go to the page with a URL that you want to save on the Dock. Here’s how to quickly add a URL to the Dock. Sure, you can make one of these pages your browser’s start page or bookmark it, but the Dock lets you add one or more additional URLs.

Your favorite URLs: Save links to sites that you visit every day - ones that you use in your job, your favorite Mac news sites, or your personalized page from an Internet service provider (ISP).A special utility or application: You may want to add your favorite graphics application such as Photoshop, or the game you play every afternoon when you think the boss isn’t watching.(click but don’t let go) on a folder icon, a handy hierarchical menu of its contents appears.