One last question, how do i display a track and follow a route at the same time? Or am i confused again?
That's simple: For every track stored in the unit, there's a toggleable "show on map" option (and selection of colours). This causes the track to be drawn on the map, and is independent of any navigation that's in progress. So you make the track visible, and navigate the route.
Unfortunately on the E30 (and I think all newer Garmins) the default option is "
don't show on map" (or "hide on map" as the menu has it). This is quite a stong default so that, even if you've set a Track to 'show' in advance of your trip, after a couple of power cycles it may well have reverted to 'hidden'.
In other words it's another part of the daily routine, to make sure the Track(s) you want to see in the background is set to 'show'. (The colour, however, is sticky so once set up, all you'll have to do is toggle the 'show' option.)
The end result is somewhat similar to this, a Route being navigated with a coloured Track also showing:
(NB older Etrex, and NB this screenshot shows follow road mode, not off-road)
As an update to
I think each Route will still be subject to the 250-point limit (including Waypoints and Via points) - or 50 points if you are asking the GPS to generate the Route (which the OP is not).
But I haven't soak-tested an E30 so I'm open to correction ...
I've now done that soak test and can confirm that if you load a 260-point Route into the E30, the last 10 points are discarded and you can only navigate to the 250th point (in off-road), and in follow road you get a 50 points warning followed by a minor crash. This is the same as the older models (apart from the crash).
The end of a 260-point 'route' as viewed in Mapsource:
The end of the same route on the E30 GPS screen:
But then what??? I had been using a Bryton so was just uploading the gpx to their website and syncing it with my device.
You can just connect the E30 to your PC in USB mode, and copy the GPX file into the [E30]\Garmin\GPX\ folder, or (safer, actually) into the equivalent folder on the SD card. After disconnecting and rebooting the E30, you should find all your Routes, Tracks and Waypoints under the 'Where To?' menu.