Effective communication involves sending and receiving information between people through various channels so that the message is understood clearly. It can occur verbally, in writing, visually, or through listening both in person and online. Some common forms of communication include vocal, visual, writing, and body language. To improve communication skills, one should consider their audience, practice active listening, make their message clear, and use the appropriate medium. Tools for effective communication include being brief, using manners, speaking positively in the first person, listening well, articulating clearly, and varying vocabulary.