Think there is already a post on this topic....
Anyway, I don't know how easy it will be for persons in regulated professions like Nursing. Apart from the degree/diploma assessment from WES/ ICAS, you would still need to go through NNAS and then apply to the provinces should you intend to practice Nursing in Canada. Even if you don't, to get a job offer or a provincial nomination you have to be eligible for registration with the province. To do this, you need to register with NNAS... Takes quite a while...