I am assuming this question is asked under the assumption that you will be doing some sort of technical accounting work. This is actually not the case during your Start internship. You are assigned to an Internal Firm Services (IFS) team and will complete team projects that are given by your team manager. I was on a marketing team designated for social media and started a campaign for instagram and twitter to bring awareness to office attire at PwC to recruiting students and new hires. I took the photos of interns and professionals, edited them, and gave the deliverables to my manager for future utilization. You may have seen a few if you've been on PwC's social media!