For any iPhone (iPhone 2G, iPhone 3G, iPhone 3GS, iPhone 4, iPhone 4S), iPads 1 & 2, and iPod Touch models, follow the steps below:

Step 1:
open Safari
Step 2:
type www.talfen.tel
Step 3 (for iOS 3.x.x and 4.x.x):
click on + (to add bookmark)
Step 3 (for iOS 5.x.x):
click on arrow icon (opens options menu)
Step 4:
choose 'Add to Home Screen'