I think that if you have experience with QlikView and go through these links is enough.
Something else you can do is to take the skills assessment exam:
I am sure you can also find a couple of websites that have some sample multiple choice questions regarding the certifications.
You can google it to see what you can find. :-)
I hope this helps a bit more.
If you think this was helpful, can you please mark the answer as Helpful or Correct?
Attachment file is helpful how to prepair the qlikview certification.