In the era of information technology, organizations seek employees who have excellent communication skills. The advantage is for the individuals who, with their excellent communicative ability, are able to meet the challenges of the professional world through diverse paths such as writing, speaking, reading, and listening. This comprehensive and student friendly book dwells on various aspects of technical communication that students of science and engineering should be familiar with. Divided into two parts, Part A of the text describes in detail the planning, designing and drafting of documents for a broad range of situations and applications. The text explores the types of business letters reflecting current practices, and different techniques of drafting them. Since, in the professional settings, executives have to work in teams, the book explains various causes of communication breakdown and ways to overcome them. A separate chapter is devoted to Advertising. Part B elaborates on Group Communication taking into consideration the collective and individual requirements. This part also includes individual chapters on Effective Presentation, Non-Verbal Cues, Speeches, Interviews, and Negotiation Skills so as to orient young professionals towards new challenges. This compact book is intended primarily as a text for undergraduate students of engineering and science. Besides, students of business management would also find the book immensely valuable. In addition, the text would be a handy reference for practicing professionals who wish to hone their communication skills for achieving better results and should prove extremely useful for those involved in everyday communication.