I have a .shp file (downloaded from here), but it is a bunch of pink lines (I expected something like a bunch of dots or something and I have to transform it into gps coordinates (which I guess it's a .gpx file), but I have a lot of trouble finding the tools to do so and understanding what everything means. Right now I'm using QGIS, and I think once I have the coordinates I should dump the values into PostGIS. Could you guys point me in the right direction about which tools I should use, how or tips about how to do things the right way?
Further explanation: I want to get coordinate points that "shape" the coastline, so given a house's position, it can tell you how far away the coast is from the house.
Edit: I managed to get some stuff with QGIS "extract nodes" option, but I don't see any use for this data:
Shape_Leng,Shape_Area 309.72983208000,4079.18723489000 309.72983208000,4079.18723489000
Values repeat a lot and they don't look like map coordinates. What went wrong?