After 4 weeks of studying I finally took the exam today and passed with 79%.
I read the normal books and tutorials, and I also bought the Whizlab test exam. I think that the Whizlab exams, although easier than the real thing, was good at pointing out my week areas so that I could focus my reading on the right things. I think I will take a long vacation now and take part 2,3 after the summer.
Have a nice summer!
Enthuware Software Support