Even though this book is already over two years old, there is still a lot of great info here! Yes, some of it is definitely outdated. However, I think it would be a good read for anyone that is new to the Android platform in general. Unless you already have an I-something or other! In that case, you are probably already familiar with what apps are, the various categories and all the wonderful things they can do for you!
I did read this on my new tablet, but I would suggest a paper copy, so that you could flip easily through it. I did learn about a bunch of great apps, all the ones I installed were completely free!