Tristan Miller wrote:

Greetings.

I'd like to learn how to use Inkscape to produce graphics that resemble shiny coloured glass buttons. This is an effect commonly seen for OS icon themes, such as KDE's Crystal SVG and Torchlight. (See http://commons.wikimedia.org/wiki/Image:Torchlight_stop.png for an example.)

Can someone point me to a good tutorial?

I don't know about a tutorial for something exactly like this, but you can try to combine these two and start from here: http://inkscape.org/wiki_uploads/marbles_tut.svg http://www.deviantart.com/view/14703295/