The manual is aimed at developing skills in business correspondence and negotiations in the professional field. Each topic includes brief theoretical information, examples of conducting business communication, exercises to consolidate the studied material. At the end of the manual, a test is offered to monitor the knowledge gained. The application contains monological and dialogical texts with a set of exercises, a list of abbreviations and a dictionary of clichéd expressions for business correspondence. The proposed aspects of theory and practice contribute to the active assimilation of not only official business vocabulary, but also construction terminology.