I applied online and heard back from a recruiter, who scheduled a phone interview with me. In that interview, I spoke mostly about my background and interest in working for Google. After the phone interview was the adwords worksheet, which was a set of exercises that took about an hour to complete. I thought that was a bit difficult, but I got through to the next round, which was in-person interviews. I prepped for the Interview a lot, learning the AdWords product and others as well. I felt very prepared going into the on-site interviews. I interviewed one-on-one with 4-5 Google staffers from different disciplines. Everyone was very friendly, but the interviews were intense. I had to show a lot of knowledge about their product offerings, explain things like "How would you explain the Internet to a five year old?", and also speak to my strengths and value for Google. I felt the interviews went really well, but in the end, they didn't feel I had enough customer service experience for the position.