The whole GPS system was first implemented back in the late seventies where the government needed a satellite network to help them pinpoint the position of their troops anywhere in the world. That network has been around since then and it has continued to provide the world with one of the most useful services man has ever had when it comes to getting around. Ever since the system was commercialised in the eighties it has helped a person get from point A to point B with little or no hassle at all. Navigation has gone from big bulky boxes to hand held devices that will talk you through just about any situation you might encounter when you are lost.
Once you have a GPS receiver you have to make sure that it has current maps of all the areas you visit regularly. GPS maps need to be updated on a regular basis so that they stay current and offer you a good representation of the surrounding areas. Whether it happens to be a suburban run about or an unbeaten track where almost no one has ever gone before, a good GPS receiver will tell you exactly where you are currently, where you need to be and how you need to get there. If you are on the road, it will even tell you how long it is going to take based on your current speed. Depending on the app that is being used for these maps, you may get a few added extras that you might find useful the next time you decide to head out. Some of the developers have included great features that help you plot out your route according to the gradient. You can pick out nice slopes that might be a challenge for your off road vehicle. If you are out camping you can plot out your route on foot, and indicate the next camp site so you know where you need to head.