Howdy Greenhorn! Glad to see you on the ranch!
That book is MORE than sufficient. Way more, so if you get that book, you'll do great.
My book has one chapter on UML, and one on OOA&D. Those two key chapters have been enough to see most of my students score 100% on those sections. So, reading an entire book is more than enough.
Enjoy it, it's a good read.
Good luck, and keep asking questions!
-Cameron McKenzie