I absolutely love all of the Made Incredibly Easy Books, and I do have the Med Surg one still after graduation, I use it for reference occasionally or just to refresh myself on topics I dont remember.
These books are easy to read, yet give you a comprehensive understanding of each med surg topic. If im not mistaken, they have NCLEX questions at the end of the chapters in this book to help prepare you.
I highly recommend these books- I also recommend flash cards, which helped me study.
If you dont want to pay full price for the book, which retails for 35$, try checking out www.half.com
You can get the book new or used, for usually cheaper.