FORUMS
Every forum has it's own flavor, but they all have a lot of good information.  There are also user groups on Yahoo that you can join.

angrymandrel.com
Lampworketc.com
theglasshaven.com
thegldg.com
torchbugs.com

SUPPLIERS
There are a lot of suppliers of glass and tools.  The suppliers listed below have a broad range of products, and websites for internet ordering.

The closest supplier to Knoxville is Mountain Glass Arts in Asheville, NC.  They are an awesome group of people, very helpful, and completely dedicated to excellent customer service.  Plus, Knoxville is in a next-day delivery zone for UPS.  So, if you can't pop over to fondle the glass in person, you can order from their website or over the phone.

mountainglassarts.com

Other suppliers on the web:
frantzartglass.com
arrowsprings.com
morettiandmore.com
lbsupplys.com
delphiglass.com

BOOKS