Hi and welcome to mobileread
Congrats on your new Kindle. Yes a cover is definitely a good idea especially if you are planning to take it out and about or if you have pets or children!
As far as I'm aware, the only lighted cover is the Amazon one which is what I have. It is a little on the pricey side but if you read a lot at night or in dim areas, a light is a good idea. This one is just so convenient.
But you could also get a cover and there are separate clip on lights to be had - I don't know much about those.
Thread: All about lights http://www.mobileread.com/forums/sho...d.php?t=112946
Thread: All about covers: http://www.mobileread.com/forums/sho...d.php?t=112944
Hope that helps a bit