OSGeo (or Open Source Geospatial Foundation) has links to all the OSS tools you wil need to create, manage and manipulate Geographic data (you know, like Google Maps). I am apparently now a member of the OS Geo Au.
Repair FAQ will show you how to fix many things around the house. It's easier than you think.
Miller welding have excellent online welding resources
Survival Research Laboratories for industrial art
Mekanarky one day they may hold another ball
Liz Argall is the definitive Liz Argall site