How to find an employer in Canada?

Where can I find work in Ontario? I am a registered nurse in the Philippines and I am recently applying online in Job bank. I am having difficulty finding an employer that would give me job offer. They want a nurse who is registered with Ontario? Does being eligible to take CNRE means your also register with Ontario? or you have to pass it first?
I did not receive my letter of direction yet but it is on the way. What's next after being eligible? How can I obtain a TWP?