I prefer shorter stories so I would recommend two of my favorites of Tiptree's: The Screwfly Solution (https://en.wikipedia.org/wiki/The_Screwfly_Solution) and The Man who Walked Home, included in the collection of shorts Ten Thousand Light Years from Home.
Or take a look at wikipedia where there's a list of her works and see which ones have titles that sound interesting:
Or take a look at wikipedia where there's a list of her works and see which ones have titles that sound interesting:
https://en.wikipedia.org/wiki/James_Tiptree_Jr.#Works
I think you'll find a few that catch the eye :)