Reading manual isn't enough I don't think

I'm going to start working through this book to learn unity 2d game dev which didn't exist when I worked with it in version 3.


Its this one if you have adblocker and cant see my amazon associate link: http://www.amazon.com/Unity-Game-Development-Dave-Calabrese/dp/1849692564/ref=sr_1_6?ie=UTF8&qid=1425848239&sr=8-6&keywords=unity+2d