I just opened the MCE track in Marketo University, and there doesn't seem to be much in there. It already thinks I have completed half the training when we did our Foundation training. Am I missing something?
Many of the courses that you may have taken when you started using Marketo are also in the Certified Expert learning path. We recommend everyone take these courses (or review the core concepts) prior to taking the Certification exam. So, you're not missing anything - you may just be a little ahead of the game. Once you've brushed up on the concepts, definitely take the practice exam to assess your readiness. Good luck on the exam.