You can find all the details regarding Immigration to Canada online:

http://www.cic.gc.ca/english/immigrate/index.asp


For your application to be eligible for "skilled worker" category, you must:

• have a valid offer of arranged employment, OR
• have one year of continuous full-time paid work experience in at least one of the occupations listed here * OR
• be an international student enrolled in a PhD program in Canada (or graduated from a Canadian PhD program within the past 12 months) and meet certain criteria