If you don't have a GPS and don't know your way, remember that our fabulous fuel filling stations often have large maps for you to peruse. And, even if the one that you spot doesn't, the friendly staff are bound to be able to point you in the right direction.
When hiring a car in South Africa, remember that at an additional cost you can have a GPS unit included in the deal. It really is a good idea to use one if you don't know the area. One thing to remember, however, is to never let the GPS take over the functioning of your brain. Don't just follow where it thinks you should go. Unless someone's been kind enough to program the device for you, a GPS isn't able to differentiate between the good and bad parts of town.
It's always best to plan your route first and rely on the GPS second. Happy exploring!