You will need
  • — computer
  • — Internet access
  • — the program WinDjView
  • file extension djvu
Open the browser and go to the link

On the right side of the page you will see a button "Download WinDjView...". Click it the download should commence automatically. Then install the program. Setting the standard, you can't change any settings.
How to open file extension djvu
The program is installed. Now all files with the extension *.djvu, will automatically open it, the problem is solved.
How to open file extension djvu