Usually, learning is, in the scientific world, performed/achieved by reading books, articles, forum topics, etc, where step-by-step in-depth informations are exposed, informations expressed via text and images.
Nevertheless, learning can be performed via video tutorials, too, where informations are presented in a more familiar user-friendly manner with a video flow that can help the user to immediately grasp various concepts, actions, how-tos, etc, in a relatively small amount of time.