This Trainer’s Guide provides a practical framework for delivering the Farmer Business School (FBS) programme for Arabica and Robusta coffee production systems in Cameroon. It supports qualified trainers in delivering standardized, high-quality training based on adult learning principles, experience sharing and practical exercises. The guide covers 13 modules addressing farm management, production planning, profitability, financial management, income diversification, access to financial services, coffee quality, farmer organizations, coffee replanting and entrepreneurship. Through interactive methods, including discussions, group work, calculations and role-plays, the guide equips trainers to strengthen farmers’ business skills and support more profitable and resilient agricultural enterprises.