Some lists have an index along the right side, which helps you navigate quickly.
Tap a letter to jump to items starting with that letter. Drag your finger along the index to scroll quickly through the list.

Tap an item in the list.
Depending on the list, tapping an item can do different things—for example, it may open a new list, play a song, open an email, or show someone’s contact information so you can call that person.
Tap the back button in the upper-left corner.