I've uploaded some more tutorials I think you'll find useful, some related to new functionality in 2.0.
Calculating words counts and grouping books by size.
A new
plugin for calibre called Marvin XD that lets you remote control Marvin from calibre.
There are now two new custom commands you can add to the in-book menu that let you
send snippets of text to Evernote and to your friends very quickly.
The new
edge-to-edge scrolling feature in 2.0 and how flyover menus work in Marvin for iPhone.
Enjoy.