The File menu has been replaced with the Microsoft Office Button found in the upper left corner of the screen.
Click for common tasks such as new, open, close, save, etc.
Click the Help button in the upper right side of the screen to access Office's help screens.
Type your questions in the Search Box.
.docx, .xlsx, .pptx Oh my!
Office 2007 has a new file format. New extensions will end with an “x” . . . such as .docx, .pptx, .xlsx
If you have Office 2003 at home, you will want to save your files so that they are compatible. Click the Office Button, choose Save As, and select Word97-2003 document.
Adding Headers and Footers:
On the Insert tab, in the Header & Footer group, click Header or Footer. Choose a style and enter your text. Use the design tools to customize your header or footer.
To add a page number, click on Page Number and choose the location you desire.
Close the Header and Footer view (on the right side of the screen) when you are finished.
Tip: To change the line spacing, go to the Paragraph section on the Ribbon and click the down arrow on the Line Spacing button 
.
Here you can also change the spacing before and after a paragraph. 
Follow the link for help/how-to and training courses for Microsoft Office 2007.
Note: For help and how-to for 2007 Word, click on Word 2007 in the box on the right side once on the website.