If you want to immigrate, check
http://www.cic.gc.ca/english/immigrate/index.asp and see if you find something you qualify for. If you want to come and work temporarily, you will need a job offer and labour market opinion before you can apply for a work permit. Coming on a visit visa means you can look for jobs and do interviews but even if you find an employer willing to apply for a labour market opinion for you, it can easily takea a couple of months and there is no guarantee you will get it. Employer has to prove that he couldn't find any Canadians or PR's who wanted the job or were qualified.