Understanding Navigation with GPS receiver
A basic essay for better understanding about navigation
Understanding Navigation.pdf
Information about Satellite Based Augmentation Systems
An overview about satellites used for WAAS, EGNOS, MSAS and other systems.
Tips and Hints for Navigation in Vietnam
The difference when navigating through Vietnam.
Tips and Hints.pdf

POI Files for Garmin GPSr

POI File for Oman for Garmin GPSr without subcategories Oman POI File
Manuals to the POI File (how to transfer the POIs to the GPSr) Oman POI Manual