The Panasonic 20mm f1.7 is a fixed focal length lens, meaning, that you cannot zoom in. The advantage that it offers, over a zoom, is that, you can get prime lenses, which are very fast (meaning, that they are very bright). This is great for indoor, or night shooting.
Thought, I haven't tried any video or other tutorials, myself (I read a lot of articles, by various users, from Cinematographers, to Bloggers, to regular users, apart from checking various videos on Vimeo and YouTube), maybe, these will be helpful:
[url="http://osgfilms.com/gh2-quickstart/"]http://osgfilms.com/gh2-quickstart/[/url]
[url="http://www.youtube.com/watch?v=uROQbbiiO2I&noredirect=1"]http://www.youtube.com/watch?v=uROQbbiiO2I&noredirect=1[/url]
Btw, do NOT use the 20mm f1.7, with Autofocus, for video. Its too slow. Otherwise its a nice and fast lens, and very good, for the price. Best of Luck, with your new cam.