I am totally new to GPS and Garmin. I have an edge 800. What can you recommend as best "first read"? Covering file types etc.
As a start I have a .trk file. How best to convert this (do I even need to) to display this track on my device? I use Linux systems generally so running Mapsource isnt an option but I can access the cd card (and have copied an open map bike map of germany to it)