This handbook is the result of the work developed through the Exploring Green Guidance project, an EU funded project, which joined concerned careers practitioners and researchers from five countries. It aims to help careers practitioners get started with green guidance. It starts by presenting an argument for the need for green guidance in the contemporary world, moving to what green guidance is and how it can be done, offering a reflection on different approaches and ways of doing it, so that practitioners may find the one they feel most comfortable with. It also considers ways for the careers practitioner to adapt to clients’ and students’ positions and attitudes to environmental issues and offers a reflection and guidelines for an ethical green guidance. After setting the scene for green guidance, the handbook then focuses on practical ways of doing green guid- ance with individuals and groups, and through more systemic forms of action like brokerage, advocacy, lob- bying and system change. Throughout the handbook we have added opportunities for further reading, for reflection and for engaging critical approaches to these issues to challenge readers to consider various possi- bilities of doing green guidance. Another important feature are the tools that are mentioned throughout the handbook. These tools were developed though the project with the participation of careers practitioners from these five countries. These aim to offer careers practitioners interested in green guidance practical tools to use with their clients and students, and to develop their advocacy skills towards systems change. We invite you to start this journey towards greening your practice with us!.