OSX Tips

To close applications:
Hold down the command button and press Q (only works with the open application)
or
hold down the command button, press TAB to the application you want to close and hit Q

For those coming from Windows,
CTRL + ALT + DEL is command button + option + esc
right click on the keyboard is ctrl

To get a lot on information on your Mac
apple > About This Mac > More Info...

To set desktop shortcuts using Expose
apple > System Preferences > Dashboard & Expose

To see what items are starting during login (Login Items)
apple > System Preferences > Accounts > Login Items