In the program, click on Help. There should be a selection to download the pdf manual. Or, click on F1 for the Windows style manual. Either way, read the Quick Start chapter.
Watch the tutorials on the Magix.com website.
You can also watch my tutorials on Getting Started in Movie Edit Pro under the Tutorials tab. Same program, different look, but PhotoStory has a few less features.
I have used Photostory for a few years now, and while I found the earlier version frustrating and bamboozling, I find this new version (20) to be really no clearer.
Worse, all the online tutorials refer to the OLD version and have no bearing on the new!