Here are some Microsoft produced "cheat sheets" to help with your learning.
Word: http://www.scribd.com/doc/131052323/2013-Word-Cheat-Sheet
Excel: http://www.scribd.com/doc/131052343/2013-Excel-Cheat-Sheet
Outlook: http://www.scribd.com/doc/151774715/Outlook-2013-Cheat-Sheet
Power Point: http://www.scribd.com/doc/131052331/2013-PowerPoint-Cheat-Sheet
Word: http://www.scribd.com/doc/131052323/2013-Word-Cheat-Sheet
Excel: http://www.scribd.com/doc/131052343/2013-Excel-Cheat-Sheet
Outlook: http://www.scribd.com/doc/151774715/Outlook-2013-Cheat-Sheet
Power Point: http://www.scribd.com/doc/131052331/2013-PowerPoint-Cheat-Sheet