Do you need Microsoft's most current version of Office? Of course you do.
Now you can go to https://products.office.com/en-us/student/office-in-education and get it for free.
Here is a handy PDF file that teaches how to insert special characters into documents. Special Character Shortcuts ( These methods should work for most programs)
Microsoft provides a handy file conversion tool that allows users of Microsoft Office 2003 to view and edit Microsoft Office 2007 and newer files. It can be located via this link, Microsoft Office Compatibility Pack