This document provides an overview of key concepts in discourse analysis including cohesion, coherence, speech events, conversation analysis, the cooperative principle, hedges, implicatures, and background knowledge such as schemas and scripts. It discusses how discourse analysis studies language in texts and conversation and how interpreters try to understand meaning despite ungrammatical forms using cues like cohesion, coherence, and context. Conversation analysis examines turn-taking strategies and maintaining conversations. The cooperative principle and its maxims (e.g. be relevant) influence how implicatures and hedges are used to express politeness. Background knowledge such as schemas and scripts help interpretation by providing expectations.