There isn't a detailed instructional guide for the application. The only thing I have found is a PDF file that contains basic instructions on how to navigate and work with the software. You can download the PDF using the link posted below.
Access the link and make sure you have a compatible PDF reader installed on your PC: http://news.lenovo.com/content/1119/files/LenovoPhotoMaster20_QuickStartGuide_ENFinal.pdf
On another hand, the software is very easy to work with: you simply add the pictures using the big IMPORT button, and then apply effects and add other items. You can also save to a few formats.