I have ordered the ColorMunki Photo colour management tool from x-rite photo yesterday.
While I was brushing up on my colour management skills I came across a good webinar series dealing with colour management using Lightroom 4.
The series is on the x-rite website and offers, in my opinion, a really good intro to the general use of Lightroom 4.
Check it out at:
http://xritephoto.com/ph_learning.aspx?action=webinarsarchive&eventid=1266&eventdateid=5152
It’s an hour+ long, so make yourself a cuppa and settle down to learn a few new Lightroom tricks.