Changing icons in Quick Access Toolbar

You do have Print Preview and Edit. I added it to my QAT in Word 2010.

You get it from "More Commands" and then, on that dialog, "All Commands."

I understand that learning to edit the XML is more than you want to do for this. You are correct that it is not simple.  Unfortunately, this is one of the icons that Word will not let you change just using the Modify button in the Modify QAT dialog.

Do take advantage of the ability to store your QAT modifications in a separate file.

One other thing you may want to add to your QAT is a button for Open Recent Files. This button is available in Word 2010 but is not available to add in later versions of Word, although if added, it does work in later versions. See Recent File QAT Add-In for Word 2013-2024 (365).