Mail merge in Office isn't always the easiest thing to pull off correctly. But once you do, it can save you enormous amounts of time. Plus you can really impress your friends and customers with the results. Right now, when you're getting ready for the holidays, is a great time to learn how to do it. Part of the problem is with the number of variables involved. There're lots of different formats to keep your contacts, as well as lots of different types of mail merge: labels, emails, flyers, newsletters, etc.
Microsoft published a PowerPoint deck embedded below, that walks through some simple questions: