I have tried several approaches and advantages and disadvantages have occurred on each arrangement | setup. I now have a combination approach; I mainly have set up shelves by author as I seem to accumulate several if I like this person's genre. Then I sort by subject in this author's category. Then there are shelves by subject for a group of related quilting books - such as machine quilting or machine applique. Magazines are grouped by magazine, by year and month. Not totally satisfied. When I am looking for something, I end up pulling out several books and magazines; my problem is they don't get back to where they should be. I need a library elf.