Wellcome to allnurses.com. What part of Germany are you from ( I loved Berlin).
I wonder have you contacted the nursing board in Ontario yet. I did my canadian RN exams in Jan of this year and passed first time. There's a couple of things you can do depending on how much help you feel you need.
1/ Make sure you get the Canadian RN exam prep book
It has about 360 questions and their answers with rationales that are similar to the ones which you will see on the main exam.
2/ I also used a web site called certinurse.ca. This has practice questions which are supposedly similar to the board exams
I don't think its the greatest site because you tend to memorize answers and not always understand the rationale behind them. I thought I would give you the link anyway because there are some people that I have spoken too that do like it.
3/ I'm not sure what kind of training you have in Germany but I came from England and the main problem with nurses like myself (worked in adult ICU for 8 years) is that we tend to have specialized in one area and the exam looks at all areas of nursing
mental health for example were areas I hadn't worked in since graduating so I had to do a bit of revising in those areas.
Anyways this is another website which may be helpful
The above website is a link to BC open learning university. They offer courses for nurses who were trained abroad and are planning on taking their board exams in Canada.
The one of most interest to you may be
NURS 371: Registered Nurse Exam Prep
You can do it online so you can start taking it now. It also doesn't cost as much as some of the other courses available.
What ever you do decide though please contact the board of nurses first and they can guide you in what you may or may not require to sit the exams.
I hope this info helps and let me know if you need any more help.