This document provides information for candidates applying for a PhD program through the GW4 collaborative. It outlines the interview process, what interviewers will be looking for in applicants, how to prepare for the interview, and answers some frequently asked questions. The interview will last 30 minutes and involve a panel asking questions about the applicant's research interests, experiences, and fit for their chosen project. Applicants are advised to prepare by practicing sharing their data and thinking about how their project fits into the field. The deadline to contact supervisors and submit required materials is January 19th, 2024.