The iBooks lets you create your own library within your Mac device. It also introduces Finder Tabs and improves the internal performance of the Mac as well as its power efficiency, simply increased battery life. This introduces Maps and iBooks to the Mac user and it also includes a more enhanced version of Safari. So if you’re reading this article, I’m sure you’re also thinking the same. The new OS offers over 200 features from its predecessor, Mountain Lion giving real value to the Mac user and enough reasons to upgrade.