I bought this book for a class, and I did the deal where you buy the hard copy book and get the kindle version for $10. To do this, you just buy the hardcopy, and then after you check out, it will ask you if you want to buy the kindle version for $10.I don't like to spend this kind of money on books, but I have to say it was well worth it. The book is very polished and extremely well-edited, so it makes learning important concepts (and preparing for class) very straightforward. If you absolutely can't afford the high price of this book (11th Edition), you may want to look for the 10th edition, which is much, much less expensive. I reviewed the 10th edition as well, and it is also very good. However, you will miss some of the recent case studies and other info that has been added in the 11th edition.