So after purchasing this a few years ago I got around to putting it to good use for a professional portfolio. I have never created a flipbook or used any related software. The most difficult thing about creating a professional looking flipbook has nothing to do with the software itself. Of course the biggest challenge to creating a flipbook is actually creating a well designed pdf. and this is where 99% of the work takes place. The functionality and features of the software are straightforward and easy to use. I just purchased another code to unlock all the features. For my purposes I want to limit access to the pdf to only those who have links to it and prevent readers from downloading it. To do this, I needed to purchase another code. There are additional features with this extra code I have yet to explore. Overall, the experience has been excellent. One feature I would love to have the capability of adding audio to the flipbook and hosting it on my own computer.