Bart's Book on Semiconductors: A self help ,complete book on principles of semiconductor devices (includes transistors)
BOIN's Semiconductor Linkpage: News and Index of links to companies, organizations and universities involved in semiconductor research and development
Compound Semiconductors Online: Resource site pertaining to the extensive needs of the compound semiconductor industry
For The Love of LEDs: Tests on LEDs (Light Emitting Diodes) from infrared to ultraviolet including beam profile images, rated reviews of LED flashlights, and a museum of LED technology from 1960 to present.
ITRS Public Home Page: Provides a roadmap(assessment) of the needs and challenges facing the semiconductor industry over the next 15 years.
Javascript Transistor Simulator: A javascript transistor simulator for learning transistor circuit operation.
LED FAQ: Frequently asked questions and answers on LED's (Light Emitting Diodes)
Physics Encyclopedia: Solid State Physics and Semiconductors: Educational link based resources on solid state physics, semiconductors,diodes & transistors and nanotechnology
Semiconductor Glossary: Explanation of key terms in semiconductor materials, processes, and devices.
Semiconductor Hall of Fame: A link list of the major contributors to the Science and technology of semiconductors, biographies and articles.
Semiconductor Links: Industry oriented semiconductor related resources
The Semiconductor Resource Page: Alphabetically arranged list of semiconductor manufacturers.
The Unusual Diode FAQ: All about the unusual types of semiconductor diodes.
Transistorized: Know about transistors chronologically
Transistors: Transistors tutorials, With some very good transistor theory, AC, DC amp, bias, and clipping fundmentals.