One thing that is cool about Mac OS X is that the more you use it, the more you will find the "hidden" nuggets of cool things you can do with it. For example, you can handle many tasks, Mac Finder directly from the keyboard without using the mouse. In this tutorial Mac Finder will show you a couple of buttons.
Create a new folder
If you are in the folder, and you want to create a new sub-folder there, just type the [Apple] [Shift] [n]. As you see, it creates a new folder named "Untitled Folder". Mac also puts the input focus to that folder, so you can easily rename it.
Move to the
If you have a folder to open it, do not you come over the mouse and double click it. Just move the folder in the Mac Finder using the up and down keys, then type [Apple] [O] when you're focused on the folder you want to "open". As you see, it takes you to that folder.
Move up the
Also, if you are in one folder, and want to move up one level in the directory hierarchy, you can simply type [Apple] [upArrow]. I find this much easier than using a mouse.
If you are looking at the file in the Finder and want to open that file, you can re-use [Apple] [O] pressure. For example, imagine that you are looking at the PDF or image file in the Finder, and you want to open it in Mac review. Normally you may double-click the file, but it is usually easier to type [Apple] [O] when you have selected the file, and it will do exactly the same thing, only faster.
files or folders of information
Finally, if you look at the file or folder in the Mac Finder, and you want to see more information about that file, you can always write [Apple] [i]. For example, if you have selected an image file, and you want to see more information about this picture, just type the [Apple] [i], and "Info" panel will be displayed that shows a lot of information about the file.
Once you've seen everything you want to see on this board, you can close it with the mouse, or you can use your Mac Finder final pressure for example: [Apple] [w]. This keystroke close the current window, and works in all native Mac applications, including the Mac Finder.