This document provides techniques for moderating user research sessions. It discusses the spectrum of moderator personalities from robotic to animated. The key attributes of a good moderator are being friendly, flexible, open-minded, objective, curious and able to deal with ambiguity. Good moderators observe participants quietly, keep participants at ease by remembering they may feel nervous or want to please the moderator, and ask open-ended questions to obtain useful feedback without introducing bias. The document also provides tips for how to handle different participant types and situations that may arise during a session.