iOS Guides has released Apple Watch Introduction, an US$1.99 eBook available in the iBookstore that reveals “everything you need to know” about the Apple Watch, from its hardware specifications to the in-built apps that you’ll be using.

The 84-page eBook is available on the iPhone, iPad, iPod touch, and Mac. It runs on an iOS device with iBooks 1.5 or later and iOS 4.3.3 or later, and a Mac with iBooks 1.0 or later and OS X 10.9 or later.

The Apple Watch will be released April 24. There’s quite a large price gap between the lowest-end model, which will cost around US$350, and the highest, which will be nearly $17,000 and encased in gold. Pre-orders will start on April 10.