Mavericks

How to Add the New “Mavericks” Features to Mountain Lion [Mac]
How do I upgrade from Mountain Lion to Mavericks? How do I get Mavericks on my Mac? Is Mavericks still supported by Apple? Can Mac 10.9 5 be upgraded?...
OS X Mavericks Hands-On With New Features
Is OS X Mavericks still supported? Can I go from Mavericks to El Capitan? Can I upgrade from Mavericks to Yosemite? Can I upgrade from Mac OS X 10.6 8...