2think.org
   Collection of book reviews and essays, mostly on popular science, with an emphasis on science as a guide to truth. Also includes a discussion forum.
   http://www.2think.org/

A Field Guide to Critical Thinking (Skeptical Inquirer Winter 1990)
   Six rules of evidential reasoning, a distillation and simplification of the scientific method. Ignoring the vowels, the letters in the word "FiLCHeRS" stand for the rules of Falsifiability, Logic, Comprehensiveness, Honesty, Replicability, and
   http://www.csicop.org/si/9012/critical-thinking.html

An Experiment in Group Learning Technology
   The results of a study designed to measure critical thinking in face-to-face and computer-supported seminars.
   http://www.qub.ac.uk/mgt/papers/ccvsem/contents.html

Association for Informal Logic and Critical Thinking (AILACT)
   A non-profit scholarly association which aims to promote research into, teaching of, and testing of informal logic and critical thinking.
   http://ailact.mcmaster.ca/

Creating A Thinking World
   Authors discussion topics include: becoming more creative, educating thinking children, and developing a morally enlightened world.
   http://www.thinkingworld.com/

Critical Thinking Study Topics
   Student study guide on psychological manipulation, cult groups, sects, and new religious movements.
   http://www.icsahome.com/infoserv_topic_collections/tpcol_critical_thinking.asp

Critical Thinking across the Curriculum Project
   Definitions, examples and argument analysis, from Longview Community College.
   http://mcckc.edu/longview/ctac/

Mission: Critical
   Tutorial for critical thinking.
   http://www.sjsu.edu/depts/itl/index.html

National Center for Teaching Thinking
   A service organization for educators dedicated to providing programs for K - 12 schools and colleges on teaching and assessing skillful thinking,.
   http://www.nctt.net

Open Courseware on Critical Thinking
   Over one hundred tutorials on critical thinking, logic, scientific reasoning, creativity, and other aspects of thinking skills.
   http://philosophy.hku.hk/think/

Philadelphia Association for Critical Thinking
   Addressing strange phenomena with the mindset, "What are the facts and what can we deduce from them?"
   http://www.phact.org/

Propaganda and How to Recognize It
   Essay on propaganda techniques.
   http://www.rbs0.com/propaganda.pdf

Real-World Reasoning
   A course given by Peter Suber for high-school students as an introduction to college.
   http://www.earlham.edu/~peters/courses/inflogic/inflhome.htm

Resources for Independent Thinking
   Many essays and articles covering topics related to thinking for one's self.
   http://www.rit.org/essays/essays.html

Skepsonix
   A collection of links to audio and video files, all on skeptical topics. Lectures, interviews, discussions.
   http://home.tiscali.be/thinkjr/

So You Want to Avoid Common Logical Errors?
   Gives logical errors a name and points out the most common logical errors and how to avoid them.
   http://www.soyouwanna.com/site/syws/logic/logic.html

The Business of Thinking
   On applied thinking, the pitfalls and roadblocks to good thinking, and effective techniques.
   http://www.thebusinessofthinking.biz

The Church of Critical Thinking
   Dedicated to spreading the word about cynical reasoning in established religion, politics, the paranormal beliefs, as well as anything else that people tend to accept blindly. "Your Suspicion is Our Mission".
   http://www.churchofcriticalthinking.com/

The Critical Thinking Community
   Providing a forum and resources about Socratic questioning, higher order thinking, and critical thinking. Organizer of conferences and publisher of books and academic resources for teachers.
   http://www.criticalthinking.org/

Thinking Straight: Internet Resources
   Categorized directory of web-based resources on critical thinking.
   http://www.limbicnutrition.com/critical/