Several years ago I wrote various GPS documents to help new GPS users. These haven't been updated to the current GPS models but they may still help some new users as the general principles haven't changed. These documents were posted on this GPS Forum but are so old they probably don't get seen anymore. There's also loads of good information on GPS that can be found with simple Google searches. BUT for any of it to be any use you must read it I used to be a great believer in RTFM but Garmin's current manuals are not very useful. Bob