PINNING WORKBOOKS AND PLACES
More efficient file and folder location is now found in the Recent option in the File ribbon.
Each file and location is listed here and has a Pin icon to the right of it.
Click on the pin icon (it turns blue) and the file/folder will remain permanently on your list.
CREATING A PDF
In all the Office 2013 applications a PDF file can be created from within the application itself.
1. Open the file that you wish to save as to a PDF file format.
2. Click on the File ribbon (backstage)
3. Click on the Export option
4. Click on Create PDF/XPS Document
5. Click on Create PDF/XPS
6. Type in a new file name if required and navigate to the required folder.
7. Click on Publish to complete the process. The PDF file will display on screen for viewing.
PROGRAM OPTIONS
Program options are accessible through the Options command in the File tab.
This is designed to replace the Tool>Options menu in Office 2003.
The Options dialog box is organised in an intuitive manner
by category (on the left): Popular, Display, Proofing, Save and Advanced Options.
GETTING HELP
Click the question mark in the top right of the window to access help. 
You can also use the Help tab to access more specific content type.
For instance, the Office 2003 Interactive User Guides allow you view the old command in Office 2003 and it will then
display the new command in Office 2013.
Goto your Internet browser and type the following address and the
interactive user guides for each application will be available:
http://office.microsoft.com/en-ie/support/office-ribbon-find-commands-FX101851541.aspx
DOCUMENT FORMATS
Since the release of Office 2007, documents are saved using the OpenXML file format.
Without getting too technical, this new format means that the text of a
document and the styles of the document are stored separately.
These new formats have two main advantages. Firstly, the file sizes are smaller overall
because the two elements are stored separately and secondly, if the style file is corrupted
the text file can still be easily recovered.
Each old file format has an extra “X” at the end.