This set of five spiral-bound manuals offers a method for rapidly improving the knowledge and technical skills of staff working in blood transfusion services in developing countries. The objective is to provide access to training for staff who have limited opportunities to attend conventional training courses. Technical training, guided by numerous activity-based tests, takes place at the workplace in the context of the performance of routine daily work. Because of this approach, the manuals should enable blood transfusion services to update and upgrade staff in a practical and cost-effective way that makes the best use of limited training resources.