how do I move to Canada from USA?

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

By acquiring a visa enabling you to do so.

Apply. The details are at www.cic.gc.ca/english/.

However, it is very difficult. Millions apply to come to Canada every year, and we usually only accept about 10,000 from the USA, so, it is very competitive.

By either qualifying for a work visa or immigration to Canada. Having a close family member who is a Canadian citizen helps, and so does having an advanced degree in a STEM field. Pretty much exactly the same a Canadian would have to do in order to move to the United States.

You First get permission to enter and move to Canada.
For that you need a Visa. Canada will decide if you can move in.
They are looking for people with the skills and education they need.

At this time they have more than enough recent graduates and entry level candidates.

About 10,000 from the USA get a Visa each year from the many that apply.
What makes you special that Canada wants you and not one of the million other applicants is what you need ti show in your application.

A visa application is very similar to a job application. The best candidates move to the next step. You have a better application than others.

The process will take a year or two. Most are over the age of 25 have very good education and appropriate work experience at a higher level.

Good Luck Possible not easy or Fast.
http://can-am.gc.ca/can-am/visa.aspx?lang=eng

Start by going to the Canadian Government website established to give the required information

google immigration or go to the nearest consulate