OS X El Capitan Guidebook: Master your rock-solid Mac system (English Edition)
OS X El Capitan is really easy to use with this guide—especially for Mac users upgrading from OS X Yosemite to El Capitan.

Chapters 1 to 3 present the new and changed features in OS X El Capitan. Furthermore, we describe what you have to watch out for when migrating to OS X 10.11—and how you either upgrade directly or re-install the system from scratch.

The following chapters shed light on the El Capitan features, going into detail. Take a look at the updated desktop and Safari browser as well as more refinements and tweaks under the hood.