This is a new feature that is designed to help answer the "How do I use my library to learn about..." question. It's also an aid to approaching the library with a topic in mind, and can be used by instructors to build class-specific reading lists using the Logos library.
This feature is not complete -- in an upcoming beta you'll be able to check things off, and it will warn you when the link is to a locked resource -- but you can start playing with it now.
Run the Reading Lists Tool and select the article on Magnificat. Then you can look at http://topics.logos.com/magnificat to see how it was made.
You can add a reading list to any topic page there, and it'll be available to everyone immediately. If you want to create a reading list on something that's not a topic, you can create a new page using "Magnificat" as an example. (I'll make an example "course reading list" soon.)
The point of reading lists is not to write a Wikipedia article, but rather to help people read up on a subject using the excellent resources already in their Logos library. Reading lists will be offered as part of search results in a future beta.