This image was taken from The Skeptic's Dictionary
General Critical Thinking sites and resources
Follow @joelau on Twitter for daily philosophical questions.
The top 25 most common fallacies (see left column)
An important part of critical thinking is being able to give reasons, whether it is to support or to criticize a certain idea. To be able to do that, one should know how to identify, analyse, and evaluate arguments.
This material is taken from Critical Thinking Web (Open Courseware on critical thinking, logic and creativity)