We have recently created some documentation for Dapp which can be downloaded from http://dapp.kerofrog.com.au/DappDocumentation.pdf
It has been created as a PDF document with clickable links in the contents section to easily jump to any location. It is fairly comprehensive and should hopefully help people having difficulty in navigating the Dapp UI.
Note: The PDF documentation has a display issue on Mac OS X (Safari?) computers where the headings in the contents section have borders placed around them. We will update this as soon as we find the reason for the issue.To your app success!,
P.S. Technology is only a small part of your app success. There is the business, sales and marketing that you need to think of too :). Which is why I also provide a bunch of free education on how to succeed on the App Store - http://kerofrog.com :).