georesources

GIS & mapping resources

Guides

• PostGIS Guide - Nicely done walkthrough on how to use PostGIS.
• Nat Kelso's Geo-How-To - Go read this immediately to learn about mapping data, tools, concepts, and useful Unix-based utilities and helpers.
• Fun with GeoNames

Datasets

• NaturalEarth - The gold standard for basic boundaries, lines, urban areas, cities, and place names.
• OpenStreetMap - Metro extracts - @migurski's pre-extracted urban areas for OSM data, in .osm or .shp format.
• Armed Conflict Location and Events Dataset
• Afghanistan IED Events
• Airports, Airlines, & Routes
• Significant Earthquakes Database
• VLIZ Maritime Boundaries
• Free GIS Datasets - lots and lots of links to free stuff.

Imagery & Raster Data

• NASA Earth Observations
• RNC, Raster Navigational Charts - nautical charts.