AT_HOME PRINTING: By far the most accessible, this is easiest option for tackling the project in smaller chunks on weeknights rather than spending hours in a studio or waiting at a print shop. However, you should test paper before buying a ton of it, printers can be especially finicky, and your can't exactly change the ink your printer uses. If your printer isn't higher end, you may have very limited paper options. Here's a little more on at_home printing.
Start with the basic invitation _ There are loads of different styles and types of cards, depending on your budget and how much information you need to include. When you order your samples, try to make sure you have some of each style to see what would work practically for you.