Attn: Donkjen- Home Based Baking Book
I have not read this book. I have however found the book by Denay...How to Start a HOme Based Baking Busines Useful and also the book by Mimi Fix - Home Based Baking for Profit.
There is so much to know about doing this and the rules are hugely different county to county. I can say that if you contact anyone local to ask advice about markets I would be careful to not disclose if you are signed up to sell anywhere specifically. i have had some unfortunate 'territorial' encounters with a person concerned about encroachment on their customers. Ask general questions about the laws without getting to far into where and who you plan on taking your product to.