Who Should Not Read This Book?

If you simply want to fill out a form, you need only acquire the appropriate software or browser plug-in. There's no need for you to know what's going on behind the scenes unless you wish to satisfy your commendable intellectual curiosity.

If you wish to create forms with a designer program that has XForms export capability, just read that program's documentation to learn how to use that program feature. XForms goes to great lengths to make the fill-out experience intuitive; reading instructions is not required.