How hard is it to immigrate to Canada from America?

I plan to immigrate to Canada after College, so that's about 8 years away. However, I was wondering how hard it is to immigrate there. I'm thinking of living in either Vancouver or Toronto. Does anyone have any experience similar to mine? Thanks in advance everyone! Additional Detail: I'm not actually in College yet. In fact, I'm still a freshman in High School. I'm just trying to get a feel for how I can achieve my goals so I can start preparing.
 
Public Comments:

1. Please check out this info here on the New Canadian Experience Class. What are you studying in college? I ask this because a mere college diploma, though helpful, won't guarantee you a successful immigration process. The cost of living in Toronto and Vancouver is very high so choose your study program wisely. If you wind up with a diploma in arts, your chances of getting a job that will pay you enough to live in Toronto and/or Vancouver will be very small.

2. Well, I live in Toronto and I have been to Vancouver and I can tell you, Toronto is much better than Vancouver. There are more facilities and more services than anywhere else in Canada. Immigrating here is not very difficult. All you have to do, is apply for a Permanent Resident (PR) Card or a student visa and you will able to stay in Canada without any hassle.

3. Canada picks their immigrants based on what they can do for Canada. Additional points can be gained by having a basic understanding of French. If you get a degree in an area that's needed in Canada, and you can find an employer, plus you have a basic understanding of French (spoken, reading, writing) you'll have no problems.

4. I heard it's really hard to immigrate to pretty much any developed nation from America. (If it wasn't, who wouldn't want leave???) BUT I also heard that the easiest developed country to immigrate to is Germany. And from there, since most of Europe is united now like the US, you could easily move somewhere like Great Britain or Ireland. I'm planning on Ireland. Don't know if this is helpful at all, but just letting you know.

5. You need a skilled trade that is in demand, or a family member in Canada willing to sponsor you. Or enough money to start a business that will be hiring Canadians
What is the quickest way to immigrate to Canada article provides great info on the subject of finding a Job in Canada prior to immigrating.

6. Forget college - be a plumber, mason or best of all a plasterer,  backer or a cook. We have nerdy MBAs and computer programmers coming out our ears and the immigrant ones are driving cabs. We need some people who actually know how to do something useful.

More info Here!