How can i get a offline copy of the user/admin guide?

Mithi docs allows you to export a specific article to a PDF file. 

Navigate to the required article in the list and click the PDF icon in the top pane. PDF file will be displayed on the screen. Download to save and print the file on your machine.

Please note, internal/external hyper links embedded in the article will be visible in the exported PDF file but the videos will be excluded.