Forest information systems (FIS) play a crucial role in effective forest management and evidence-based decision-making processes. They provide a comprehensive and integrated approach to collect, analyse, and disseminate data and information related to forest ecosystems. This guide aims to equip users with the knowledge and practical tools necessary to carry out a pre-analysis for the efficient development and implementation of forest information systems at national level. The different sections include specific exercises and learning objectives, offering step-by-step instructions to help practitioners understand, develop and implement the outlined processes. The exercises covered in the guide include institutional mapping, understanding the organizational context, as well as defining business and IT-related objectives of a FIS programme. Each exercise is accompanied by introductions to the topics and explanations of the context. The guide emphasizes the importance of active stakeholder engagement and participatory analysis throughout the FIS development process. It encourages users to identify key-stakeholders, gather relevant information on the national context, and use this data for informed decisions. Additionally, the guide provides guidance on mapping activities in the national forest sector, as well as establishing linkages between actors, activities and demands.