This document discusses the importance of handshakes. It provides 4 S's for a proper handshake: smile, straight, slide, and strength. It notes when handshakes are appropriate, such as introductions, meetings, and goodbyes. The interpretation of handshakes is discussed, saying a weak handshake implies lack of confidence while a strong squeeze seems aggressive. Different types of handshakes are described, such as the prison handshake which holds on too long and the normal handshake which is brief and conveys professionalism.