Read the training manual front to back. Practice the process you're giving in the training -- whether you are familiar with the process or not. Practice this process many times. To be successful in training someone to accomplish a process or task, the trainer must be highly accomplished in performing that process or task. Before you begin your presentation, make sure you are an expert at whatever you are training.
Teach the overall goal of the process before you outline the steps. Your students will learn better if they know the goal first. For instance, you might explain that the goal of human resource training is to understand the objectives of the human resource department. Or, you might explain that the goal of training someone how to operate a grill is to know how to cook food with a grill.
Outline the steps clearly, in written and spoken forms. If the process is something you can demonstrate, do so as you outline the steps. For each step, explain what to do, how to do it, and why you are doing it. Outline the steps several times.
Provide students with the conclusion -- or what the result of the goal should be. Explain why this is important.
Give students time to practice the process with supervision, and allow them to ask any questions they might have.