The operating manual for the Kindle Fire is available online on Amazon.com. The website offers downloadable user guides for several models, as well as instructions on how to find the user guide on your own device.
From the home page of the website, click on the Help link in the site's header. Select the Amazon Devices option from the Help menu. Then click the See All Devices & Reading Apps link. This displays a list of all the Kindle Fire devices. Select your model to see a new list. In the Learn More section of the list, click the user guide link for your specific model to see a page that offers a link to a PDF file of the user guide.