Download the program Calibre.
It allows you to download, for free, and legally, content from hundreds of magazines and newspapers via your usb connection. And, you can very easily set up RSS feed newspapers of your own. Free, easy and a great way to load up your kindle with free daily content. Also works with nook and sony e reader.
Ah...i see he did it specifically for Linux ....that is really excellent.
Very Very Good!