The objective of this report is to provide a step-by-step guide for researchers about to embark on a project with a traditional knowledge component; it is also meant to provide CEMA with a guide for how best to incorporate traditional knowledge into their work processes. The report opens with a brief definition of traditional environmental knowledge and eight principles for working with traditional knowledge. The majority of the guidebook is dedicated to the step-by-step approach, including review and collaboration, developing a plan, contacting the community, preparing for and conducting interviews, and dealing with the data. The guidebook also includes sample budgets, agreement for sharing, traditional environmental knowledge use licence, and sample interview questions.