Thank you so so so much for all of your replies. I have a master degree in humanity, although I love social science. I took only a few sociology courses at school, so I want to catch up with the other applicants who are from sociolgy. That's why I want to know how much those people have learned and read at school, although I have read those classic sociological books.
1) Specifically speaking, I am interested in social networking, for example. Where to find how much has been developed in this field? I don't want to be seen as a student who is silly enough to state something that has been already studied.
2) Also, it seems to me that there is a trend that people with statistical background will be more welcomed. I got 800 in math, but I don't have that background. That's why I want to know how much people with that background have learned in quantitative things. How can I catch up?
3) Do you know how those people without a sociology background state the reasons why they are going to change their major during the application?
I do appreciate your help. Thank you so much for your time;)