Project Interview - Search and Recommendations - Any good reads?

Hi all, I’m interviewing for a project tomorrow for search and recommendations vertical of a petcare client for the role of a product manager. Any tips or suggestions on what I should read about or any useful resources ?

The previous interviewees have suggested to read about - regression based modelling, personalisation, tailored recommendations, re-gen, search algorithms.

Any other topics you could suggest in search and reccomendations would be really helpful.