Bible study by yourself?

Does anyone know of a good book or online bible study program that you can do on your own? BESIDES the bible. Please no body say "Just read your bible" or any other variation. Of course I'm going to read the bible first and formost. I enjoy the bible study group at my church, but over the summer it is hard to do while my daughter is out of school. We have always had an accompanying workbook that explains the significance of certain things and made it easier to see why certain things were so important and unusual. It would also ask questions for you to think about and I always got so much more out of the bible study than if I had just read the bible on it's own.