Unfortunately, there is no manual for the application, because no official website is listed as being available. I have tried finding a website with all the listed information, but nothing was available. In this case, I advise using the built-in HELP section accessible through the main menu, or simply go to the installation folder (right click the shortcut on desktop, then Properties > Open file location). Some of the developers choose to place the user guide in form of a PDF file in the installation directory.