If you need some pictures to use from your project, when creating your A Plus content you can do this within the Book Bolt Studio
Go to the cover or an interior page that you want a PNG file from.
Click "File" from the drop down menu and then choose "Export to PNG".
This will go to your default download folder and then you can use it.
You may need to crop the image some, depending on the module you use within A Plus.
You can use MS Paint which is free on a PC, or various free apps online.