I recently interned at Microsoft, and I was able to get a return offer for another internship for the same team. I'm back at school now, and my goal is to nail the return internship so I can get a return offer to work full-time. In my spare time while at school, how can I best prepare myself to hit the ground running for my return internship? For context, I worked with Azure APIs during my internship, being more of a back-end developer.