Below is a link to Wikipedia that will take you to a list of books that are referred to in the Canon of Scripture, but are not scripture. Not all of the books referred to are available, but the ones that are, will capture your interest. I have recently been reading the Book of Enoch and the Book of Jasher. They are interesting reads. There are reasons that these aren't added to the Canonical record that I won't get into for the moment, but I think one should definitely take time and read these works. I think it will expand your perspective and help you in your walk.