As a first time user of a GPS system for a car or ground transport, I must recommend the TomTom 1 as an excellent piece of equipment, well worth having in getting you to where you wish to go, and keeping you informed at all times clearly, and, where you are at that moment. Invaluable for emergency use and for finding those hidden turns. All in all, most certainly well worth having and excellent value!
I would also recommend Amazon highly for excellent back-up where necessary. I couldn't get the TomTom to switch on, which I suspect was my fault - read the instructions closely!!! - and when contacting Amazon I couldn't have received better help. It did come on when I did what the instructions recommended.