Technical

ControlBooth.com - A site devoted to teaching high school-level techies practical and useful skills they can use and apply in the theatre and provide an online community of techies where younger and newer techies can talk with their peers or more experienced techies.
http://www.controlbooth.com

UK Sound and Lighting Community - Includes articles, equipment reviews, news, hire company database and a forum.
http://www.ukslc.org/

Blue Room Technical Chat - Theatre forums with large archive of technical questions. Many different categories, stagecraft, technical, props.
http://www.blue-room.org.uk

Technical Theater.com - Digital resources for the technical theatre industry - Theatre links, lighting, sound, stage, rigging, and wardrobe.
http://technicaltheater.com/

WirelessMic.net - Features articles, reviews, and discussion on theatrical sound design and wireless microphone technology.
http://www.wirelessmic.net

Theatre Power - Provides lighting, video, sound and special effects equipment for professional and amateur groups in the Hertforshire, Bedforshire and Buckinghamshire area of England.
http://www.peteskidmore.btinternet.co.uk/index.htm

Careers in Technical Theatre - Brief descriptions of work that may be carried out by the various theatre departments. Includes directors, designers, wardrobe, stage management, set construction, and lighting.
http://www.abtt.org.uk/