The following is an in-depth introduction to DRAM architecture that I had found useful a few months ago: https://www.imec-int.com/en/imec-magazine/imec-magazine-june-2020/the-history-and-future-of-dram-architectures-in-different-application-domains-an-analysis This is especially helpful to provide a physical understanding of DRAM, instead of just an abstraction understanding.

Thanks for sharing this read @aman0456. It was interesting to see the tradeoffs that were encountered while designing DRAM and seeing how it is physically put together.