Adults want to be self-directed. In technical training, this includes not reaching for the keyboard as a user is about to push the wrong key. Adults are motivated to learn, and prefer a task-centered approach rather than memorization. Through experience, you may already be familiar with the kinds of processes that your users need to know. You know the content, but your style of presentation is also important.
Visual learners learn through seeing while auditory learners learn through listening.
If you tell a visual learner what to do, he will not learn it as well as if you either show him or suggest he write it down. The opposite is true of an auditory learner, whose primary style is listening rather than watching. Kinesthetic learners learn through doing. If you show a kinesthetic learner how to word search and she watches over your shoulder, she will not be as successful at it on her own unless she 'touches' the system. If you attempt to address each of the three styles in a training session, visual, auditory, kinesthetic, you greatly increase the likelihood that your attendees actually will learn.