MIT course on QGIS/Open Source GIS
QGIS tutorials
Tutiorial for version 0.8.1
QGIS Workshop PDF
Shuffling QGIS into the open source GIS stack from Conferance in 2007
Online GIS documents at the University of Trento
has GRASS tutorials
Using QGIS and GRASS for processing and analysing Lidar Data
Island Institute Crest Video Tutorial
Grass tutorial
Useful to get started with QGIS
SRTM data from USGS
Elevation data for 80% of the world. 1 arch sec for US, 3 for the rest of the world.
Aster Global Digital Elevation Model Info