This is the manual for the "train the trainers" course aiming to increase the capacity of small-scale farmers in ASEAN countries. The manual focusses on five countries and commodities: Snakehead (Cambodia), Tilapia (Thailand), seaweed (Philippines), marine fish (Indonesia) and shrimp (Vietnam). In this volume, lectures presented by experts are included. The training program included technical aspects related to the culture of commodities, marketing, access to information, organization of farmer groups, gender and good culture practices.