Please suggest!!
Imo you should never study for an interview..
I mean an interview is intend to evaluate your knowledges and after that you've to remember that once you've be taken there is a try period in which each part could go away without reasons.
Usually it doesn't happen, but the only reason I can think it shall is if any of the 2 parts has lied in the interview..
So don't study, your knowledge is to be evaluated and often sincerity is appreciate (to me it happens to tell in an interview that somethink was totally foreign to my knowledge and they told me that is ok, because it's a very specialistic things of an application).
Only thing I can suggest is to have an idea of what make the industry to where you're doing the interview, because it's important that you like it.