Here are some screenshots of my Kindle Fire unrooted:
Kindle Fire Rooted
Click on the thumbnails at the top. Yeah, it's a mess...I have to cull some of the stuff. One screen shows circlelauncher - the one with mostly text. If you click on the text you get a semi-circle or circle of app icons.
The book covers when clicked on take you to the book opened in Mantano to last page read (used Desktop Visualizer)
Most of this can be done WITHOUT rooting.