Welcome Hope, sorry I cannot help you but I like you I am interested in a book so look forward to what people have to say. You will definately get plenty of advice this site is great for help and learning new things and making friends
It is really personal choice but I have found blocks between 6 to 8 inches square are good they are bug enough to learn on and do something yet not so big they take for ever and day to complete.
Hi there Hope and welcome.
Yes i would suggest a smallish size to get started on, then just jump in!!