This video demonstrates how to add a web address shortcut on the iPad to your home screen. This makes it easy to go to any website just like an app.
Simply go to the website you would like to have on your home screen and press the share button next to the bookmark button. Once you press that press "Add to home screen". It will take a small snapshot of the page and let you enter a name for the shortcut.
Sometimes the webpage will have a pre-selected icon that will make it look really nice. If this is not the case you can zoom in on a certain part of the page and it will capture that area to give you a better view of what the page actually is.