Awaiting delivery of my Nexus 4 - 16GB, is there software to back up the phone data to my PC?
You'll be using Google to sync most of your phones data, such as contacts and apps. You can take it a step further and use third-party apps to save various data, such as text messages, call logs, apps (app data backup requires root) and various phone settings/layouts. Here is a great resources to get you started and understand what can be backed-up:
http://forums.androidcentral.com/general-help-how/31622-getting-started-android-tips-tricks.html#post483167
If you have any questions don't hesitate to ask around.