Orienteering does not inc. GPS but is an excellent way to Micro navigate and learn navigation. It helped me be better at navigating, especially in winter when doing 159 munros.
I'm a BOF Insructor so advise looking at the BOFstuff online.
http://www.britishorienteering.org.uk/
Going to a safe area, near you home with a pre printed map, obtainable from your local Orienteering club will help learn the basic skills. You may have a country park nearby with a permanent course setup with maps for practicing. These are normally low difficulty. In fact it's becoming the Orienteering season now as the brackens dieing off.
Nick