The canonicity of the Song of Songs has been questioned less than the holiness of the book. This article discusses some of the history of this matter, and explains that the book is to be read openly, for the Word of the Lord is pure.
What is the Song of Songs all about? This article sheds some light on how we can read the book: focus on the call of Christ to his bride.
To whom are the words spoken in Song of Songs 8:12? This article is an exegetical analysis of this verse.