The purpose of this final thesis is to explain the communication more comprehensively because it is indispensable in our lives, both privately and in business. It is the process of the information exchange among people. Our career depends on successful communication. To achieve successful communication and avoid conflicts, it is essential to know the forms and the styles of communication. There are numerous books on this subject in the world, but that is no surprise. Because communication is a term in which we learn from each other, and at the end we are non-communicative. The thesis is divided into several parts, with an emphasis on styles and forms of communication. There are three types of communication: passive, aggressive and assertive. The passive method implies communication in which a person understands the attitudes, feelings and desires of others, and does not speak about their own. Aggressive refers to people who get what they want even if it means the costs of another person, by being dominate. Assertive people express their feelings, desires and opinions and accept and recognise others too. Forms of communication can differ by language and by the number of participants involved. Communication can also be verbal and nonverbal. Verbal communication implies communication with words and language, while nonverbal refers to body movements and facial expressions and is often used to express attitudes and emotions and to encourage the change of verbal communication. Communication by the number of participants can be intrapersonal, interpersonal, group and public communication. Intrapersonal is the one in which a person communicates with herself only. Interpersonal means communication between two or more people. Group communication includes one or more groups. Public communication is called mass communication because it implies that statements are publicly and directly transmitted through the technical distribution media directly and unilaterally to the general public.