It's been a while since we've announced a new ebook, but we've been hard at work and are pleased to let you know that Ted Landau's "Take Control of Your iPhone, Second Edition" is now available, and it is up-to-date for the latest iPhone 2.2.1 software release. Ted's a writing machine, and he has pumped out a 183-page compendium (plus additional online resources) of the most useful information about the iPhone, with a particular focus on helping you work more effectively, avoid trouble, and fix any existing problems. The book normally costs $15, but as a limited time introductory discount, you can get it for $10 with this link (follow the link, click the Buy Ebook button, and your discount should appear in the first screen of the shopping cart).

Taking the Murphy's Law approach that if something can go wrong, it probably will, Ted explains how your iPhone figures out where in the world it is, how it connects to the Internet and cellular data networks, and how it communicates with your Mac. You'll learn key details of syncing with iTunes and via MobileMe, how to manage your apps, and ways you can share files with your Mac. The ebook helps you get the most life from your iPhone battery and connect a Bluetooth headset, and it provides tricks for typing more quickly and accurately. You'll find a cornucopia of advice for making the most of the main built-in iPhone apps, including iPod, Phone, Mail, Maps, and Safari. But that's not all - extensive problem-solving sections help you solve network problems, resolve sync conflicts, avoid crashes, and, if necessary, restore an ailing iPhone from backup.

The ebook covers the iPhone from a Macintosh point of view, though most of the information is useful even if you connect your iPhone to a Windows PC. The ebook also covers the iPod touch; we just couldn't figure out a clever way to work "iPod touch" into the title.

For those who have the preview version of the second edition "Take Control of Your iPhone," click the Check for Updates button on the cover to access your free update. And if you own the first edition of the ebook, also use Check for Updates to look for a 50-percent-off discount on the upgrade. We've also sent email to these groups with details.