Saving a Document in Microsoft Word

To save a new Word document, press Control + S, give the document a name and press Enter.
Another way to save is to use F12, which is Save As. Type in a name, then Tab around the Save As dialogue and choose where to save the document. Tab back to the name, just to double check it, and press Enter to save. It will save in your default place, if you do not choose a save location.
Note: In Office 365, files automatically save to your OneDrive, but you can change the default save location in the Word Options, under the Save section.
Once your document is named and saved for the first time, from then on you can just press Control + S to save the changes.
If you are using OneDrive as a save location, file changes save automatically.