Are you a vExpert?
VMware's vExpert award isn't something that you can study for. It's not something that you know, it's something that you are!
This is the 5th year that VMware have operated the the programme (“program” for any US readers) and applications for the 2013 award are open now. If you've contributed any of your time in 2012 to enhancing the VMware community in some way then it might be worth your while applying.