Top keyboard shortcuts that are super helpful!

Using keyboard shortcuts can greatly increase your productivity, reduce repetitive strain, and help keep you focused. For example, to copy text you can highlight text and press the Ctrl + C shortcut. The shortcut is faster than moving your hands from the keyboard, highlighting with the mouse, choosing copy from the file menu, and then returning to the keyboard. 

Below are some top keyboard shortcuts recommended to memorize and use!

Ctrl + C  and Ctrl + X

Both Ctrl + C  will copy the highlighted text or selected item. If you want to cut instead of copy press Ctrl + X.

Ctrl + V  

Both the Ctrl + V a  will paste the text or object that's in the clipboard.

Ctrl + Z and Ctrl + Y

This one's pretty familiar, and it's saved me a few  hundred times...it's the Undo command! Pressing Ctrl + Z will Undo any change. For example, if you cut text, pressing this will undo it. These shortcuts can also be pressed multiple times to undo or redo multiple changes. Pressing Ctrl + Y would redo the undo. 

Source: http://www.keepcalm-o-matic.co.uk/p/keep-calm-and-ctrl-z-5/

CTRL+T - Opens a new tab in most web browsersCTRL+SHIFT+T - Have you ever accidently closed a tab.... and then you have to open a new tab and try to search for the web page you were just on? Now - ctrl+shift+t will reopen the last tab you closed!!! (Hallelujah!)

Ctrl + F

Pressing Ctrl + F opens the "Find" in any program. Ctrl + F includes your Internet browser to find text on the current page. Quick tip for internet windows: if you're looking for something within a text box, you'll need to click inside it and then press CTRL+F in order to search inside the box.

Alt + Tab or Ctrl + Tab

Pressing Alt + Tab switches between open programs moving forward. For example, if you have your browser window open and other programs running in the background press and hold Alt and then press tab to cycle through each open program.

Tip: Press Ctrl + Tab to switch between tabs in a program. For example, if you have multiple tabs open in your browser now press Ctrl + Tab to switch between open tabs.

Tip: Adding the Shift key to Alt + Tab or Ctrl + Tab moves backward. For example, if you are pressing Alt + Tab and pass the program you want to use, pressAlt + Shift + Tab to move back to that program.

Tip: Windows Vista and 7 users can also press the Windows Key + Tab to switch through open programs in a full screenshot of the window.

Ctrl + Home or Ctrl + End

Ctrl + Home will move the cursor to the beginning of the document, and Ctrl + End will move the cursor to the end of a document. These shortcuts work with most documents, as well as web pages.

Ctrl + P

Open a print preview of the current page or document being viewed. For example, pressCtrl + P now to view a print preview of this page.

Last but not least, one I've been using the entire time I have typed this... text formatting shortcuts:

CTRL+B - Bold
CTRL+I - Italics
CTRL+U - Underline



courtesy of: 
http://teachingtrio.blogspot.com/2014/09/technology-thursday-keyboard-shortcuts.html
and  http://www.computerhope.com/tips/tip79.htm