Hello Diane,
There's a good book by a bloke called Rob van den (or perhaps van der) Plas. The title is something like "Cycle Touring" - I can't exactly remember it even though I've got the book somewhere. If you do a search on Amazon.com you should be able to find it. Its a good straightforward book with a lot of practical, sensible advice. You'll get your own ideas as you tour, but one thing I've always found useful is a compass (even in cities) because if you've taken a wrong turn you can at least work out roughly which direction you should be going in.
All the best,
Andy.