Thank you for your attendance. I am looking forward to the next 6 weeks together. I promise to make the class as enjoyable as possible, while teaching you all about Excel! The book ISBN for this class is Benchmark Excel 2013 L1&L2, 9780763853891. The Excel 2013 Level 2 only is 9780763853914. I would suggest looking for a used book at Amazon.com or half.com. It should save you some money.