If you’re planning to take an exam on VMware VI3, and you need to learn all the nasty little details, the VMWare Reference Card might help you a little! The so-called vmreference VI3 card is a reference card on paper-format (double-sided) with a lot of details (for example system requirements, and ports on a vSwitch).
If you have/had to prepare for the exam, and you succeed(ed), please let me know. I might think of doing the exam myself… someday.. :)
You can download the VMreference card for VI3 from http://www.vmreference.com/ . A direct link to the downloads (PDF format) would be http://vmreference.googlepages.com/esx3