It does not matter if you have purchased the iPhone 5 or are just curious to find out certain functions of the new Apple headset: the official iPhone 5 user guide answers all your questions. The manual includes 33 chapters covering all basic operations are discussed, from setting up your e-mail to change your wallpaper. The 156 pages thick manual is available in English and also from the iPhone to consult.
The manual will also detail the capabilities of the new iOS 6 and the use of the included apps. You will also learn about the functioning of the different buttons, insert the SIM card and use the supplied headset.
More info: iPhone User Guide (PDF)