http://en.wikipedia.org/wiki/Credit_card
Weather a person only has around a $1000 per month or a 100K each month, one has to try to spend less than what their income is.
http://money.ca.msn.com/creditcard/how-to-benefit-from-your-credit-card#page=0
http://ca.finance.yahoo.com/news/worried-credit-report-inquiries-110049444.html
Unfortunately, for most people the $Y$TEM is set up for the very rich to flourish.
http://www.pbs.org/independentlens/park-avenue/film.html
http://topdocumentaryfilms.com/park-avenue-money-power-american-dream
http://www.nypost.com/p/news/business/realestate/residential/who_afraid_of_the_park_4J4qFChQG5CTwUljidq1pN
http://jfmoneymatters.blogspot.ca/2013/03/park-avenue.html