As someone who is very keen on coding and trying to share resources with teachers, I am always on the look out for a new practical book. While theory is all well and good, there is nothing better than experience to get yourself started.
Coding Games in Scratch: A Step-by-step Visual Guide to Building Your Own Computer Games by Jon Woodcock is a great start. My aim over the next few months is to complete the 8 large projects that can be coded in scratch. The projects would be suitable for kids between 6-9 years.
Make sure you check out the book soon.