This document provides an overview of key concepts for developing effective messages and strategies for influencing, advocacy, and campaigning. It discusses Oxfam's approach, theories of change, power analysis, partnership approaches, and planning processes. Specific topics covered include developing clear and concise key messages tailored to different audiences, using stories and evidence to support messages, and effective lobbying, negotiation, and relationship building techniques. The goal is to provide attendees with tools and strategies for crafting persuasive advocacy messages and influencing decision-makers.