OpenOffice.org
Quick and Fast: Free alternative to many Microsoft Office programs. If I didn’t already own MS Office, I’d definitely be using OpenOffice.org!
Where to get it: http://www.openoffice.org/ The download link is on the right side of the page.
The suite is 6 programs, all free:
Writer - This is basically just Microsoft Word.
Impress - Microsoft PowerPoint.
Base - Microsoft Access
Calc - Microsoft Excel
Draw - Your basic drawing program.
Math - A calculator program, for complex math equations.
Tutorials: These are on the website.
License and Use: Open source and under the GNU Lesser GPL (GNU LGPL). Read the licensing info at http://www.openoffice.org/license.html