1. From what I can tell you have to buy the full package
2. You can download Office for MAC.
2. You can open it in OpenOffice which is a free wordprocessing app.
3. You can save it to PDF using OpenOffice. Just click Print and print as PDF.
4. Don't have Keynote, someone else will have to tell you that.
5. Don't have Keynote, someone else will have to tell you that.
6. Don't have Notes.
Post your question on Microsoft's Mac forums as it's their software you have questions about: