Power Searching course has started on 24th September 2012 and it's mid test assessment gone but it's not late to enroll your self for this course. Please join this course and get certificate of Google for free.
You will have to pass the exam. You will have to pass mid test and final test assessment exam. You can give exam any time before 10 October. If you have any query regarding this you can ask me you can also ask google's support forum.
Enroll your self for this course on google.com/insidesearch/landing/powersearching.html