Mac OS X is designed to be stress-free with an intuitive user interface. However, the details are difficult unless you get used to them.
basic operation
Display and overview of the Apple menu Sleep/Restart/Shut down the system List of keyboard shortcuts How to use and set up Finder How to use and set up Spotlight
user
desktop
Change the desktop background image Show/hide the hard disk icon on the desktop How to use Dashboard widgets Additional installation and removal of widgets
window
image
hardware
Format (Erase) USB Drive Connect MacBook to External Display - Clamshell Mode