If you have ever read the Book of Proverbs, you know that it is filled with wisdom in what seems to be no discernable order.  Mary Turkington spend a few years organizing a concordance for Proverbs.  It was over 500 pages and no one wanted to publish it.  So she condensed the information into topics, cross referencing verses.  The result is a user friendly book, complete with devotionals on topics we all can use.