If you just want to have fun tracking with your dog...then see if you can get this book. It's called "Enthusiastic Tracking" The Step-by-Step Training Handbook by William (Sil) Sanders. I belong to the online CKC tracking group, and this book was recommended to me on there.
It's a great book to start at the beginning...when you are trying to wing it on your own. I've been tracking with my dog since he was a pup, and he LOVES it.
You should be able to get the book on-line. It teaches you how to lay your own track,etc.
Gina