Enter here: http://www.excelcampus.com/tips/mr-excel-book-40-greatest-tips-review/
Bill Jelen (aka Mr Excel) has just released his 40th Excel book and it is awesome! This book contains his 40 greatest Excel tips of all time. Plus 30 additional tips and tutorials by Szilvia Juhasz, an Excel Cocktail Recipe Book, Jokes, Tweets, Excel stories and a lot more.
Enter your chance to win a copy of the book on the Excel Campus blog. All you have to do is leave a comment at the bottom of the post with your favorite Excel tip. Checkout the blog post for more details.