Looking for advice on how to prepare for HY Fixed Income Analyst Internship

Hi all,

This summer I'll be interning as a Fixed Income Summer Analyst specifically on the High-Yield team at a large buy-side Asset Management firm. I only have experience with equity research and know very little about fixed income, and even less about the High Yield side. I was wondering if anyone here could point me towards some prep materials/books that would help prepare me for being able to analyze, model, and write research reports for HY Bonds.

Thanks