im also a newbie but very interested, my tablet starts up but does not seem to have a os installed is that normal
The tablet we got at the GDC (if that is what you are referring to) has the MeeGo OS installed on it of course. Do keep in mind it is pre-Alpha. I've locked it up about 10 times so far just messing around with it :P
For web development, I didn't pickup on anything special that we have to do. I'm assuming that a standard HTML5 page would work just fine on it. Having to re-configure my home network to allow the tablet on (grrrrr) otherwise I'd test the assumption by hitting a few sites. You could try http://www.3dtin.com/ and see if it works on the tablet.