it's an awesome book, but at 1150, you should be more focused on tactics, just saying
Winning Chess Endings by Yasser Seirawan
The interesting story is that I ordered winning chess tactics by Seirawan, but got endings instead. I sent message and they refunded money. I get to keep book for free:-)

How does this book rate compared to other endgame books? My standard rating is about 1170. I recently received this book in the mail and I like it, but will I be better with a different endgame book?