Forget MS Office Mr H. Go with Open Office. It's free and compatible with everything MS.
Apache OpenOffice - The Free and Open Productivity Suite
Unfortunately OO is way behind the curve, not to say Apache hasn't finally started to do some serious work on it. LibreOffice has been working on MS Office compatibility for years while OO lingered in virtual limbo. I have OO on my older machines and LO on all my new ones.
H, with either one you can save your work in M$ Office format, no need to do conversions,
though LibreOffice is well ahead of OpenOffice in the compatibility arena.