It's called The Rites of Brigid Goddess and Saint by Sean O Duinn (I apologize for my lack of accents in the name). There were some great reviews on Amazon, including one from someone I very much respect: Erynn Laurie of Celtic Recon fame.
I have not started the book yet. I only returned home from work two and a half hours ago and spent much of that time exercising and putting dishes away. Rest assured, once I finish it I will post a review. I'm very excited about reading it because, believe it or not, I don't have any books devoted to my patroness. I have plenty of myths in which she features. I have anthologies of Irish stories. I have a growing collection of Pagan literature in which she is mentioned here and there. This is the first book I have purchased that explores the traditions surrounding her. I feel that buying and reading such a book is important, not only for my understanding of my beloved Goddess, but for understanding her connection to the arts. I am hopeful that this study/ethnography (I'm not sure what it will be more of) will inspire me to grow closer to Brigid/Brighid and work more with her in conjunction with my artistic pursuits.