revit architecture tutorials for beginners

here is some of the video tutorials for revit architecture and some useful links also included in below..  you can download revit architecture directly from the link....
revit architecture coming from autodesk... its exclusively designed for the designers of builders ,i mean architects and structural engineers...

http://students.autodesk.com/?nd=download_center



flash tutorials


placing walls and doors
placing coloumns
customizing content
sectional views
elevational views
perspective views
creating building site


some other sites providing the video tutorials of revit architecture
for user interface
modifying tools required
modelling
views and directions
modelling continuity
video tutorials