Effective communication is about listening well and understanding your audience. It involves considering how your message will be received and interpreted by others based on factors like their background and sensitivities. There are 10 key rules for effective communication: listen more than you speak, know your audience, manage how people may interpret your message differently, be considerate of others' sensitivities, establish clear goals, use an appropriate mode and timing, consider the communication environment, involve people in changes that affect them, be clear and concise in writing, and keep language simple. The overall goal is to have the skills to affect other people in important situations.