The Skeptic's Dictionary
An Encyclopedia of Claims, Frauds, and Hoaxes of the Occult and Supernatural – James Randi book
Freethought – Position that beliefs should be formed only on the basis of logic, reason, and empiricism
Pseudoscience – Unscientific claims that are wrongly presented as scientific
Skepticism – Questioning attitude or doubt towards one or more items of putative knowledge or belief
List of books about skepticism – Wikipedia list article
List of common misconceptions