This manual sets out the steps to guide rural advisory and agricultural extension workers to successfully integrate trees in rice-field and associated farms and landscapes using practical tools for implementing agroforestry practices on farms in Southeast Asia. Developed in collaboration by FAO with CIFOR-ICRAF, the manual builds on manifold experiences, consultations, and visits, especially in Indonesia, Lao People’s Democratic Republic (PDR), the Philippines and Thailand. The FFS approach is introduced as one of the best ways to share learning and knowledge and to discover technologies.