Tap Guides (http://www.tapguides.co.uk ) has published “iPhone 6s Guidebook,” a 313-page eBook available in the iBookstore for US$3.99.

It’s packed with in-depth tutorials and tips about the things you need to know about the iPhone 6s and 6s Plus, their apps, user interface and settings. You’ll learn about the history of the iPhone, how 3D Touch can be used to peek, and pop at content, how to stream songs via Apple Music, capture Live Photos, troubleshoot common problems and more.

“iPhone 6s Guidebook” includes color screenshots. It’s available on iPhone, iPad, iPod touch, and Mac. It requires an iOS device with iBooks 1.5 or later and iOS 4.3.3 or later or a Mac with iBooks 1.0 or later and OS X 10.9 or later.