This book is a must have if you own a Ford Focus. It'll save you a lot of money and time if you wish to do regular maintanence on your car. I like how this book is layed out. It even has a troubleshooting section and the causes of certain diagnostic codes which are labeled on two pages. It has a lot of novice type jobs which I'm sure can be done with a little mechanical background knowledge and this book. It even includes a general overhaul section that is described and pictured step by step. Buy this book! Only gripe I had was that it could have used more pictures.
I bought this because my focus dropped it's valve seat. This pretty common for the SOHC engine so I discovered. My engine dropped the #4 cylinder seat, which damaged the rod and piston. The cylinder wall was intact. This manual allowed me to take this apart and reassemble this at fractions of the cost that it would have been if I had a mechanic do the work. I have used it several times since this. Haynes is highly recommended as a reference for any vehicle that you have.