You can use your Kindle to read ebooks and electronic versions of magazines and newspapers. The device is also capable of playing MP3 audio files. If you'd like to transfer files from your PC to your Kindle device, you're in luck -- the Kindle can interface with your computer via USB and is treated much like a USB flash drive when plugged in.
Connect one end of the included USB cable to your Kindle, then plug the other end into an available USB port on your PC.
Open your Start menu and select "Computer."
Double-click on the Kindle drive and leave it open.
Open your Start menu again and once again, select "Computer." Open the folder containing the files you'd like to transfer to your Kindle.
Drag the files from the folder on your hard drive to the Kindle drive using your mouse. The Kindle recognizes document files such as AZW and AZW1, TXT, MOBI and PRC. The Kindle can also play such audio files as AA, AAX and MP3.
Disconnect your Kindle when you have finished copying files to the device.