You can even practice with almost any map.

Take road maps for instance, you can use what little terrain features they give (such as the lay of the road itself, intersecting roads, streams and rivers, and elevational map color changes) to figure out where you are and track your progress as you drive.

Try it some time if your riding in the passenger seat.

Once you get the hang of it you can use those same basic skills on more detailed maps for cross country navigation.

If you want more info on the subject another term for Terrain Assoc navigation is Orienterring and there are several books out on it.