This is the Adafruit GPS library - the ultimate GPS library for the ultimate GPS module! Tested and works great with the Adafruit Ultimate GPS module using MTK33x9 chipset ------> http://www.adafruit.com/products/746 These modules use TTL serial to communicate, 2 pins are required to interface Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! Written by Limor Fried/Ladyada for Adafruit Industries. BSD license, check license.txt for more information All text above must be included in any redistribution To download. click the "Download ZIP" at the right side, extract the archive and rename the uncompressed folder Adafruit_GPS. Check that the Adafruit_GPS folder contains Adafruit_GPS.cpp and Adafruit_GPS.h Place the Adafruit_GPS library folder your <arduinosketchfolder>/libraries/ folder. You may need to create the libraries subfolder if its your first library. Restart the IDE.