What is the difference between book-maps, learning maps, and maps?
Though book-maps, learning maps, and maps all let you to organize topics, the amount of structure and semantic markup varies based on the type of map.
Maps structure topics into hierarchies and relationships. They are the simplest method of structuring a publication in DITA. Many people consider them more appropriate for web content than for traditional print/PDF user manuals.
Book-maps structure topics as book content. Topics can be organized as front matter, chapters, back matter, and appendices.
Learning maps structure topics as learning content. Topics can be grouped into courses, modules, or lessons.