This document discusses knowledge management and tacit knowledge. It begins by defining knowledge management as a system to facilitate learning, innovation and sharing to achieve organizational objectives. It then discusses how tacit knowledge, which is highly personal and difficult to express, is captured through experts explaining their thought processes and experiences. The document outlines various challenges in transferring tacit knowledge, such as articulation challenges given its subjective nature, and cultural challenges from lack of trust and intolerance. It proposes modes of transferring tacit knowledge including socialization, externalization, combination and internalization. Specific knowledge management practices like communities of practice and training are suggested.