I second this blog post. I worked with Tom on a project several years ago and he's brilliant. Started doing python more frequently after that project and I found his blog to be very helpful in finding a good way to conceptualize pandas and python data structures in general.
Thanks. There's a special place in my heart for any blog that opens with 'Prior Work' :)
also I would recommend looking at videos from matt harrison for polars or pandas, e.g.: