The document discusses effective communication. It defines communication as the process of interacting with others to share knowledge and experiences. It identifies the key elements of communication as a sender, message, channel, receiver, decoding, and feedback. It also outlines different types of communication based on means of delivery, corporate relationships, and direction of information flow. Barriers to effective communication and skills to improve communication, such as making the message clear, checking for understanding, and encouraging feedback, are also discussed.