Resources

National Sustainable Agriculture Information Services
Greenhouse and Hydroponic Vegetable Production Resources on the Internet
http://attra.ncat.org/attra-pub/ghwebRL.html#hp_general

SCIS Soilless Culture Information System
Information on the technological and economical aspects of soilless culture systems provided by the Food & Agriculture Organization of the United Nations
http://www.fao.org/hortivar/scis/

Hydroponics 101: Gardening with Grodan
Tips & info for successful hydroponic gardening, focusing on rockwool
http://www.hydroponics101.com

Growing Hydroponic Tomatoes
An interactive website on growing hydroponic tomatoes for students, hobbyists and beginner growers. Provided by the University of Arizona 
http://ag.arizona.edu/hydroponictomatoes/

The Urban Garden Magazine
Articles & information on all aspects of indoor gardening, plus a blend of contemporary lifestyle articles covering everything from music and cinema to travel, environment and culture
http://www.urbangardenmagazine.com/

Maximum Yield Magazine
The premier magazine of the indoor gardening industry, with plenty of informative articles and online extras.
http://www.maximumyield.com/  

Progressive Gardening Trade Association
A resource for both consumers and hydroponic retailers - be sure to check the 'consumer info' page for lots of good tips.
http://www.pgta.org

Cornell University Vegetable MD Online
Access to the many Vegetable Disease Fact Sheets produced over the years by Media Services at Cornell. Color photographs enhances the use of these sheets for plant disease diagnosis.
http://vegetablemdonline.ppath.cornell.edu/Home.htm

BBC Gardening
Very helpful website that offers a step by step at identifying plant diseases/pests.  
http://www.bbc.co.uk/gardening/advice/pests_and_diseases/

The Technical Institute for Indoor Gardening
Hands-on training in indoor gardening.
http://www.technicalindoorgardens.com

Articles
A series of articles on hydroponics
http://www.planetearthhydro.com/pages/Articles.html