In order to use your Kindle Fire, you are going to have to use your fingers. Typing on tablets without a keyboard can be slow though. If you plan to blog or write lots of content using your Kindle Fire, you are better off investing in a keyboard for it. These keyboard cases protect your device and each have a keyboard for you to use for typing:
Belkin Bluetooth Keyboard Folio Case: helps you type faster and with less errors on your Kindle device. The case protects your gadget and can serve as a stand for it.
Bear Motion Premium Folio Case: designed using PU leather material, this case has a detachable Bluetooth keyboard. It wakes and puts your device back to sleep.
KHOMO 360 Degree Rotating Stand Case: this case ships with a slim Bluetooth keyboard with 10M range. It has Kindle specific keys.
You could always buy other Bluetooth keyboards and pair them with your Kindle Fire. The above products make the process easier though.