What do you want to know?
VBA functionality is similar to Excel's and there are all kinds of processes you can manage via code, e.g. formatting, mail merge, page setup/print, etc.
If you can give an idea of what you're trying to do, I'm sure someone can come up with more details. In the meantime, try recording some macros in Word doing what you want, then read the code and check the helpfile for anything you don't understand.
HTH,