I went through the campus recruiting program. I would recommend that you go to all of the socials that you can before the interview process begins because the communication between employees is crazy. When I was invited to the office visit I got congratulatory emails from many of the people I met at the socials almost as soon as I found out. There was one on campus interview and one office visit. Oddly enough, unlike a lot of the reviews I had read, my on campus interview had a few behavioral questions but I didn't have almost any during the office interviews.The office interview consists of 2 interviews and one case study. The best advice for the case study I would say is to be confident , even if you don't grasp every single thing about it. As long as you can show you have some strong points you can run with those.