The document discusses what a thesis statement is and how to write one. It defines a thesis statement as the topic sentence or main idea located in the introduction. It advises the writer to choose a topic, take a side on that topic and make an argument, and include 2-3 key pieces of information to discuss in the paper. It also notes what to avoid, such as writing in first person or attempting two topics. The document then outlines three steps to writing a thesis statement: 1) decide the topic, 2) make a claim about the topic using opinion words, and 3) include 2-3 pieces of evidence to support the claim.