You can share your OneDrive files from your O365 (online) space, or you can share them from your local drive. I have directions on this link, which is a shared Word file.
One of the benefits of sharing it “online” is that the user does not have to download the file to preview it. You can also make a modification and not have to replace the file… and who doesn’t do their best reviewing “after” you publish! And in my case, I am not taking up space on WordPress, which does have a limit. Win, Win, Win!
Happy File Sharing!