How Good Is This Book For Improving My Endgame?

I find that I lose a lot of games in the endgame. I really suck at finishing a wom game. I recently purchased Jeremy Sillmans Endgame book. I'm wondering what you guys think of it? I've been studying (over and over) the class D and class C sections. I think I'm more in the class D rank but I also find the class C stuff useful. What do you guys think of this book? Thanks

It's a good book.  Not as detailed as FCE or Dvoretsky's, but he focuses on really practical stuff so everything you learn is useful.

thanks to all who replied..I can see the value in studying this. the whole chicken coup idea is riveting and understanding rook pawns and how you can use them as a drawing mechanism is quite intriguing..I wish I had known these things a few months ago when I lost some games to a chess friend/rival..haha..I probably would have won those games and drew some of the ones I won..thanks again