In long lists, like your contacts or all the songs in your music collection, flick the screen to scroll down and then tap the gray scroll bar that appears to the right to quickly go to a certain letter in the list.

If you think it’s difficult to grab the just mentioned scroll bar, tap and hold it until the scroll bar unfolds, instead of catching it with a downward or upward motion. You can also simply touch it and drag the bar to the left.