The utility of a GPS device lies in the maps that it has for reference. It is the accurate map of the area that you intend to visit that will be instrumental in allowing the GPS device to plot the best course for you and provide you with the necessary prompts that you require on the way to your destination.
The maps that you select for downloading on to your GPS device must be checked for accuracy. Most of the free maps that are available on the Internet are generated by the users who have populated these maps to provide the user with a convenient commute. You can get all the user generated Garmin GPS maps free of cost without having to opt for costly packages from the primary vendors. The maps that you get for free from the Internet do not usually compromise on quality and accuracy and are as good as a commercial map that you can get for a fee.
There are some techniques that you can use to find whether the websites offering the Garmin GPS maps free have uploaded maps that are useable and navigable. You definitely would want to have an indication of the accuracy of the map before you download it as your smooth commute would depend on the accuracy of the map. Once you start your journey there is little scope for verifying the effectiveness of the GPS map. So, it is better to make sure that the map that you are going to get is good enough for ensuring that you get your destination without any hassles.
Some of the providers that have Garmin GPS maps on their site provide the visitors with an extensive suite of information regarding the background information on the GPS map that they are offering for your use. Some of the pertinent details are the date on which the map was created, resolution etc. Look for GPS maps that were created recently as it might reflect the current state of the streets through which you would be traveling. The map resolution is another important parameter as you would want to study the map during your journey.
Some of the dependable providers of Garmin GPS maps free of charge have some screenshots of the map on their website. You can use these shots to verify the accuracy of the street information and ascertain whether the map will be suitable for helping you in your journey.
Another tip that you can use while looking for Garmin maps is to look for area-wide maps. Look for specifics rather than maps of a wide geographical area. The more the details, the better it is as you would be using the GPS maps for navigating through streets and not a wide expanse of land.