Read for evidence and credibility. An author is credible if his or her claims are supported by sufficient and accurate evidence. Consider how the author supports claims. Distinguish between facts and opinions. Look for logical fallacies.
Logical fallacies can be accidental slips in logic or can be methods for deceiving the audience.
Refer to your handbook for definitions of the various types of logical fallacies that may occur in reasoning. Look for concessions to other points of view. If the author is arguing a for a particular position, look for indications that other points of view are valid. A good argument acknowledges other perspectives. If the author does acknowledge other points of view, note how the author treats or portrays the opposition.