This document provides an overview of key skills and concepts for being a great consultant. It discusses the differences between internal and external consultants. The objectives of a consultant are to establish collaborative relationships with clients and help identify and solve problems. Key consulting skills include technical abilities as well as interpersonal and consulting skills like listening and building trust. The document also covers stakeholder analysis, different consultant roles, styles and the typical consulting process which involves entry, data collection, feedback, engagement, and termination. Ethical issues for consultants are also addressed.