Marketo Certification

This is probably your best bet:

http://community.marketo.com/MarketoUniversityHome

You can also refer to this overview and download the certification roadmap PDF found on this page:
http://community.marketo.com/MarketoArticle?id=kA050000000L98ACAS

Yep I would follow the link Kenny provided and go through the on-demand courses (most are really short videos) just as good refreshers. Also just look at the deep dives in the community.

The roadmap is very useful.  

I also took the practice tests located in the Basics 2: Foundation Quizzes. I found this under the University and courses. I can't remember if this came with the on-demand or the live foundation class or if it was a stand online 'class'. There were 4 quizzes and cover all aspects of Marketo. 

I don't see the foundation quizzes listed in the courses.  Does anyone else see these or know where thse are located now?

They might have been part of the Live Foundation class I registered for. Here is another pretest someone else had posted to the community. my.leadmd.com/pretest.html

Thank you, Amber!!