This is the link for Free Sketchup Program download
This is the Link for SketchUp Video tutorials
This is the link for the Self paced tutorials, These are interactive on your computer if you have SketchUp installed these are the BEST to learn the basics. You have to download them and then click on them and they will start up sketchup and you will be able to go throught the steps.
This link is more Advanced Video Tutorials