Hello, cfisher, and welcome to MobileRead.
Start with the downloaded and paper guide you received, then try this Amazon page.
http://www.amazon.com/gp/help/custom...deId=200375440
Once you get the hang of it, you'll wonder what you ever did without it.
If you'd like to try loading free books, there are thousands here. You'll want the .prc version (mobipocket)
Enjoy, and don't hesitate to ask questions.