The document discusses the role and functions of a trainer. It states that a trainer must be able to organize and present information to increase trainees' knowledge, organize activities to reinforce learning, and check that learning has occurred. A trainer acts as a facilitator, subject matter expert, motivator, presenter, and quality controller. Good trainers exhibit qualities like confidence, guidance, problem-solving, clarity of expression, and flexibility. They employ different training styles like active, passive, independent, collaborative, and cooperative learning to accommodate different learning needs.