Hello everyone! Thank you for the warm welcome! I have been using Calibre but I was hoping I could find the iTunes for Kindle (or something like that, which would allow me to organize on the PC and just sync it with the Kindle). I haven't tried LibraryThing yet but I will look into it! I have also just downloaded Adrian Colegate's Kindle Collection Manager but I have yet to use it
I have also downloaded the latest software update from Amazon, and I'm not sure but I think it lets me organize my books by Most Recent, Title, Author and Collections (unless that feature has always been there but I just haven't noticed until last night).