Getting around a Linux GUI isn't something that a book can teach you, it's something you learn by trial and error (or being instructed by someone who knows how you think).
I feel that your best bet is to learn the command line. In other words, don't use a GUI interface at all! Once you're familiar with the command line (and by association how Linux and Ubuntu work) the machine as a whole will be easier to use.
The Ubuntu Wiki has an excellent article on getting to know sudo from a command line perspective; as well as a few examples of how other commands are used.
Honestly, a book probably isn't the best idea - since you can find results much faster with Google, Server Fault and SuperUser.