Should I use a repressentative for Immigration to Canada?

Posted July 17th, 2011 by immigratecanada and filed in Immigration to Canada

I am soon to make an application package for immigration to canada. Should I use a repressentative as I am quiet nervous as to what if I miss out a document or something. Why do people appoint representatives anyways? and how much money am I to show in my bank to the immigration officer? Is one year of tuition and living expenses enough?