Chatting with Messages and FaceTime
OS X includes Messages for instant messaging and FaceTime for video chat with Mac, iPad, iPhone, and iPod touch users.
Set Up Messages
The Messages app enables you to chat with your contacts via instant messaging. Using Messages, you can connect via Apple’s iMessage service to contacts on Macs and iOS devices or to contacts on other online messaging services, such as Google Talk, Yahoo! Messenger, and AOL.
The first time you run Messages, you set it up with your Apple ID, which identifies ...