A practical guide designed to assist those organising and participating in a citizen science project to get the most out of the experience. The guide will enable you to have the skills to ensure a project is well set up from the start, is able to communicate to its stakeholders and citizens, manage its data and outputs, and overall ensure research benefits. The guide has been compiled by the LIBER Citizen Science Working Group and pulls on the generous contributions of the open science community.

Subsection: Project Planning and Communications | Project Planning: A Step-by-Step Guide; Stakeholder Matrix. By Line Laursen and Thomas Kaarsted | Communication; Communication Plan (Citizens); Project Highlight: Find a Lake. By Lotte Thing Rasmussen | Subsection: Management of Citizen Science Data | Research Data Management: Quick Start Guide (eLearning course) | Use of Data Policies in Citizen Science Projects: A Step-by-step Guide. By Jitka Stilund Hansen | Citizen Science Data and Standards; Project Highlight: Defining New Data Standards with Citizen Science. By Sven Schade and Chrisa Tsinaraki | Acknowledgment of Citizen Scientists on Research Outputs; Project Highlight: Lizard Conservation with the Balanggarra Rangers in Australia. By Georgia Ward-Fear | Planning and Securing Resources - The Data Management Plan. By Iryna Kuchma | Project Highlight: FAIR Data in a Citizen Science Project | Project Highlight: The INOS Project | Subsection: Scientific Literacy | Increasing Scientific Literacy with Citizen Science. By Berit Elisabeth Alving.

Editorial Committee: Paul Ayris (Chair), Bastian Greshake Tzovaras, Jitka Stilund Hansen, and Kirsty Wallis Co-Editors-in-Chief: Thomas Kaarsted & Simon Worthington Reviewers: Sara Decoster & Stefan Wiederkehr.