TidBITS Publishing has released “Take Control of Your iPhone,” a 195-page ebook by Ted Landau. The ebook shows readers ways to use their iPhones more effectively and includes dozens of step-by-step problem-solving procedures. Landau covers activation, set up, ringtones, the core iPhone applications, and hardware peripherals, as well as how to best use Wi-Fi, EDGE, and Bluetooth connections. Through the end of December, an introductory offer drops the ebook’s US$15 price to $10.