I will teach you a couple of helpful shortcut commands on the Mac which will make your life much easier. These commands will work on any Mac computer (Macbook, Macbook Pro, Imac, etc).
If you are running many applications at once, it sometimes gets tricky to move around from program to program. Commands/shortcuts allow you to execute commands without even having to lift your hands off of the keyboard.
The list of shortcuts on a Mac is nearly infinite, so I plan on giving you a few that will be very helpful and easy to learn.
Switch between open programs: Hold down the command button, and then while keeping it pressed, hit the tab button. Keep hitting the tab button until you get to the program that you are searching for. Switch between open windows: Once again, hold down the command button, and then while keeping it pressed, instead of hitting the tab button, hit the tilda (`) key until you get to the window that you are looking for. To get to the desktop: hit the function and f11 key. To get back to your program, hit the function and f11 key again. To see your widgets: Hit the f4 button. To see all of your open windows: hit f3.
Most programs share the same basic combinations for shortcuts. Save: Command and S, Copy: Command and C, Cut: Command and X, Paste: Command and V, Undo: Command and Z, New: Command and N, Open: Command and O.
There are many more shortcuts available. Apple's website has a page that will show you the complete list of shortcuts and that site can be found at http://support.apple.com/kb/HT1343