From Joomla! Documentation
As a trainer you are tasked with producing and running training courses and you will need to create training materials to support your learners. You are likely to have a thorough working knowledge of the aspects of Joomla! that are the subject of your training courses, but you might need to refresh your knowledge from time to time, especially as new developments take place. You will want to have access to ready-made training materials that you can adapt for your specific circumstances.