...becomes this mind map...
According to Wikipedia, a mind map is "a diagram used to represent words, ideas, tasks or other items linked to and arranged radially around a central key word or idea. It is used to generate, visualize, structure and classify ideas, and as an aid in study, organization, problem solving, and decision making."
This tool is a good way to visualize a complex Wikipedia article, become familiar with the most important concepts and explore related topics.