This document provides an overview of effective communication skills. It defines communication and outlines the communication process. Communication is defined as establishing common understanding between parties through shared meaning. The key elements of the communication process are the sender, message, channel, receiver, feedback. Barriers to effective communication include noise, language barriers, emotions. Effective listening skills and various styles of communication such as assertive, aggressive, passive are also discussed. The document also covers public speaking and presentation skills including audience analysis and preparation.