Who can immigrate to Canada? who cant?

I need to know for a school project please.
Answers:   
To immigrate to Canada you need a skilled trade that's surrounded by demand or a family member surrounded by Canada willing to sponsor you.You can also immigrate there if you are going to start a business that will be hiring Canadians.
Any one who has be convicted of a criminal offence(this includes DUI) are considered inadmissible.They can not
You also have to be healthy.
http://www.cic.gc.ca/english/immigrate/i...
Anyone who knows what pockets to grease and have enough money to spend can immigrate to Canada :)

Resolved Questions:
What auto-biography speaks of poverty and immigration to the United States from Mexico?
thank you in advance! The Teachings of Don Juan: A Yaqui Way of Knowledge by Carlos Castaneda Mexican Government prints this. http://www.dallas.org/node/108 Journey of Hope, Memoirs of a Mexican Girl - Rosalina Rosay Wild Steps of Heaven by Victor Villasenor. Not sure...The Three Burials of Melquiades Estrada is as close...

Can i apply for Canada visa from Sweden?
Is it easy to get Canada visit visa, if i apply it from sweden?And how much time it take to get the visa? And is it possible for a student whose studying in sweden as on student visa to apply for canada visa?or is it possible to get access in some course in canada univ and...