The Garmin c550 is very easy to use right out of the box. Just turn it on and go. It quickly finds satellites and is extremely fast in calculations and accurate. The only complaint I have is with the age of the built in mapping. Several roads which have been around for over 7-8 years are still not in the database and restaurants which closed down over 5 years ago still are. The Bluetooth functionality works great although I would recommend buying the external microphone unless you're driving a car which is very quite inside. Overall I definitely recommend this product!