It is needless to say that using keyboard shortcuts more and more reduces your dependency on the mouse, it indeed does that. However, it may seem a bit difficult to practice them in the beginning, but once you master them, you will be impressed with your own speed of doing things on your computer.
So, to make your speed considerably faster on an Apple Mac, I am going to share 20 very useful Mac OS X shortcuts.
Global Menu Shortcuts
The navigational function arrow keys on a Mac is similar to the Home/End and PageUp/PageDown keys on found in PC. Left arrow is meant for Home and right one is meant for End. Up-arrow for PageUp and down-arrow for PageDown. Yes, there’s a tricky thing here, you can use your keyboard to delete one character right of the cursor simply with Fn-Delete.
By using the Control and F2 keys together your focus can move straight to the Menubar from anywhere on the page or document. Once you are in the menu bar, you can easily navigate using the arrow keys. To select an option, all you need to do is to using Enter key.
Move your focus to Dock using Ctrl and F3 together. You can again navigate all around simply by using the arrow keys. In order to select and open the application, press Enter.
Now when you would like to know the definition of a certain word in the document. Use Ctrl, Command and the D keys together. You will notice a popup dictionary for the word selected. Did you know that before? Try using it today, it is really very helpful.
In Windows when you want to quit or exit an application, you can use Ctrl and W keys. But in the Apple Mac OS x, you can do the same by using Cmd + Q keys. Hit them together and you will be able to exit from a running application.
By holding Shift-Cmd-Opt-Esc for a minimum of three seconds, you can force an application to quit even when it is busy with your commands. It generally works with Leopard and Snow Leopard only.
Want the shutdown/restart/sleep dialogue box now, bring them with Ctrl-Eject keys pressing together.
Ctrl-Shift-Eject lead the display to go to sleep mode immediately.
Opt-Cmd-Eject assists in putting the computer to sleep soon. It means it does not immediately.
Ctrl-Opt-Cmd-Eject lets you down the computer immediately.
Now a few Finder Shortcuts
You can use Enter key to rename the selected file.
You can open selected file in the folder by using Cmd and O keys.
Cmd-Delete usually sends the file selected to trash.
You can get the trash emptied with confirmation through Shift-Cmd-Delete.
With Shift-Opt-Cmd-Delete you will have trash emptied without confirmation.
With the keys Shift-Cmd-N together, you can create a new folder in the current directory.
To open the View Option panel in the finder, use Command and J keys from your keyboard. Under this Option panel, you can find several options that will allow you to do the tweaking related to icon display and appearance.
Using the keys Cmd and I together, you can open and Get Info panel especially for the item selected.