TheToolkit is a great tool for any Galaxy Nexus owner since it easily unlocks the bootloader, roots the phone, and installs CWM to get you all ready and set up for your flashing needs. It’s pretty much a one stop shop for anyone looking to really customize their hardware.
The Toolkit has just been updated to 3.0 and it lets you do it all in just one click. So if you’re not sure what all of the things we mentioned above mean, know that if you try it out you’re risking voiding your warranty but you will be able to enjoy all the custom ROM goodness the Galaxy Nexus has to offer. If you change your mind, it also allows you to relock the bootloader and reflash the stock recovery.
Think you want to give it a try visit the forum thread over at XDA-Developers for all the details.