Here is a great video which explains Rules and automatic sorting in Microsoft Outlook. Just click on the big arrow.
OpenOffice.org is a multiplatform and multilingual office suite and an open-source project. Compatible with all other major office suites, the product is free to download, use, and distribute.

Adobe Reader is a free program available from Adobe to read PDF files.
If you are just getting into Microsoft Office 2007 here is a good,basic tutorial to get you started.