Depending on the model, you might need some additional software to get some features to work on your unit, but I would think that your built-in features should be enough to do basic navigating. I'd suggest starting with a good look at the owners manual and the Garmin website. Both of these should list what, if any, software is needed. Garmin is a great GPS. I have one that's about 14 years old (12XL) and it still gets the job done although it doesn't have color and all the other cool features of the newer models. What model did Santa get you? Good luck.
onehorse is right I have a Garmin that is a couple of years old and all the software should be loaded for basic navigation. There are features on mine as well that will not work unless I buy the upgrade and download them. Have fun with it!
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