I was unable to open the ebook in my computer, even though I downloaded the required program they mentioned on the confirmation email. I am only able to read it in my iphone but of course, it's not the same :/
but the content is ok. it gives you good options to build menus.
if you dont mind reading it from your ipad or iphone i will recommend it. i would not pay more than $9.99 for this book.