As items drftt down a blog's timeline they can be overlooked, so here is a series index for this series of pieces:
This big question:
Setting Up in the Real World or "Where do we model?"
Setting Up in the Real World – GeoReferencing
Setting Up in the Real World – GeoReferencing : Large Sites
UK local interest!:
Setting Up in the Real World – UK Coordinate Systems
Some detailed tips:
Setting Up in the Real World - Labelling Spot Heights
Setting Up in the Real World - Labelling Coordinates