iTunes' "Info" Tab is Gone in OS X Mavericks
The OS X Mavericks upgrade reveals many new changes, among which is (to the surprise of no one) an even greater reliance on iCloud. When you connect an iOS device to iTunes running OS X Mavericks (as well as iTunes 11.1, though I haven't confirmed for lower iTunes versions), the Info tab is gone. That means syncing local Mail, Contacts, and Calendars with the Mac is toast. Now, if you bathe in Wi-Fi and floss with ethernet, you're golden. Otherwise, you're best leaving your grandparents' Macs just the way they are.