If you're venturing towards mobile development, or HTML5 / CSS3, heard about Media Queries and thinking about looking into it, I'm just going to list a load of links I've found that might enlighten you...
Page layout / media queries - http://foundation.zurb.com/
Boilerplate HTML5 - http://html5boilerplate.com/
Media queries / min-width example - http://www.unmatchedstyle.com/sandbox/min-width/
Media queries - size info - http://nmsdvid.com/snippets/
Haven't read up on this yet but I know its going to be something important -
http://twitter.github.com/bootstrap/
LESS the dark side of CSS3 - read this first it helps! - http://www.stuffandnonsense.co.uk/blog/about/less
Then this - http://incident57.com/less/erg Mac version!!
Windows version here - http://winless.org/
or this - http://lesscss.org/
Then OMG this! - http://lesselements.com/
If I can megamix/mashup/mixin all this stuff together and get it to work, I should be able to finish stuff before I start doing it! :o)