Open Street Map

So, having used LoadMyTracks to create a .gpx file to add to OpenStreetMap... but I seem to be able to only see a visualisation or the xml generated...mmph!

I found this Open Source GIS page which is about as useful as they (don't) come. Firstly, in information design terms, any list with more than 20 items on it is not a list, it is a waste of time, secondly, any list organized alphabetically is almost random (who ever thinks the thing I haven't heard of yet probably starts with "P" or maybe "S"...)

I need a GIS guru with a lot of patience to ask my dumb questions of...