These instructions include how to install the battery, how to determine your initial current position and how to input a destination. This helps your unit know where the satellites are supposed to be, so that it takes less time to pinpoint your position. However, if you give it a little hint, or you are near where you were the last time the GPS unit was on, it usually takes no more than 3-5 minutes to fix your position. Once again, please read your user guide for actual instructions. There are different ways to input numbers and letters into your GPS unit.
Most units use arrows or buttons to move between functions and screens.
The up arrow will advance thru the alphabet and 10 digits. After you find the value you want, you just enter it and proceed to the next letter. Other GPS units have actual alphanumeric keys, like your phone, to make it easier to enter names and numbers. There are several buttons on the face of most GPS units that, when pressed, route you to various operating options. They may have different names, but they have similar functions.