How to Add Web Site Bookmarks to Your iPhone’s Home-screen.  You can put bookmarks on it, too, creating one-tap shortcuts to your favorite web sites.

The process is super-simple (as you can see from the video below).

Here’s how it works: Open up Safari and load a web site. (I know this is really hard, but after you learn this shortcut you’ll never have to type in this URL again so don’t worry.) At the bottom of the screen you’ll see an icon depicting an arrow that looks like it’s trying to get away from a square. This represents the never-ending struggle between the pursuant rectangular form and chased arrowhead. It also represents tapping a button to perform an action, which is more applicable in this case. So tap this button. If you managed to tap that button successfully, you’ll have a few options. The one you want to tap is “Add to Home Screen”. So do that. You’ll be asked to choose a name for the homescreen icon. So, you know, pick a good one and save it. When you’re done it’ll show up on your homescreen and you’ll never have to type in that stupid URL ever again.

You can also use this trick to create visual speed dial icons (although this mobile webapp will save you a little work).

Source: Add Web Site Bookmarks to Your iPhone’s Homescreen