I purchased this GPS a few years ago to replace a smaller Garmin GPS, the older unit had a small screen that was difficult to read. I do not need glasses to drive, but I do need to wear reading glasses.
This new GPS is much easier to read while driving and it came with free lifetime map updates. I checked the Garmin website and then had to find a USB cord to fit the Garmin. I had a cord in my "bag of power cords" that was marked GPS - but it did not fit - must be from the old GPS.
Finally after trying several cords, I discovered that the cord to my Fujitsu scanner fit the Garmin. The Garmin website has an express update button. Very easy to use, plug in, hit the button and let it do its thing. The only problem is that I did not have a microSD card handy, so I had to choose the option to include only a portion of the US map on my GPS. No problem, I just picked the area I will be in and can change or update again later.
I will be leaving San Antonio on Monday to head north, I usually pre-program my anticipated stops. I will put in the addresses of RV parks I want to stay at, with a few extras in case I change my mind or don't like the looks of a park when I arrive. I will also put in the addresses of several Visitors Centers along the way.
If there are National Parks or National Historic Sites or other sites of interest along the way, I program in this information, too.
I may not stop at all these locations, but it makes it easier to just to look in the "favorites" section of the GPS and hit go.