Man, this parenting thing is tough.  Parenting is about the intricacies of raising a child.  
I'm hesitant about having kids. What are some of the responsibilities of a parent?
Supporting the kid in various ways, such as emotional, physical, social, and knowledge.  
Do people from different social classes use different parenting methods?
I am not sure about social classes, but each child is different.  It is a continious responsibility that has a unique course for every kid