GLASS FORUMS
One way to increase your knowledge about glass is to visit glass forums.
A FEW GLASS FORUM URL'S
WARM GLASS FORMUM - http://www.warmglass.com/phpBB/index.php
ARTGLASSPICS - http://groups.yahoo.com/group/artglasspics/
THE MELTING POT - http://www.talkglass.com/forum/forumdisplay.php?f=4