As far as backing up goes, Microsoft has a great piece of free software called SyncToy. You can get it from the MS site. The URL is:
https://www.microsoft.com/en-za/downloa … x?id=15155
It will run in Windows 10, but in order to use the task scheduler to automate backups, you have to do a tiny bit of fiddling (instructions are on the MS site also). There are three modes of operation:
Synchronize - which allows additions/revisions/deletions to be exchanged between source and destination
Echo - additions/deletions/revisions are only ECHOed to the destination from the source.
Contribute - additions/revisions are copied to the destination from the source, but deletions are not made.
I have it run every night, making sure that I have backups of my Documents directory on 2 separate USB drives.
Open Office works well for me as I do a lot of editing on my laptop which run only Linux. I've not noticed any problems between OE and Word, but I don't get too creative in the formatting arena anyway. One of the initial problems I had was that OE on Linux didn't have any of the fonts Word used. I installed them using the Ubuntu Software Center. Now I use the same fonts in both word processors.
~Tom