Hi designer, thanks for your order!

You can get the v3 beta release from the link at the bottom of the download page here:
http://moi3d.com/download.htm

And it looks like you may have found them already but the introductory videos are here:
http://moi3d.com/2.0/docs/tutorials.htm

The help file is here:
http://moi3d.com/2.0/docs/moi_help.htm

And the list of what each button does is in the help file reference section here:
http://moi3d.com/2.0/docs/moi_command_reference.htm

Also there are more links to other videos and other stuff in the Resources section of the web site.

Thanks,
- Michael