There is Eliezer Yudkowsky’s Harry Potter fan fiction “Harry Potter and the Methods of Rationality” (HPMOR), which conveys many ideas and concepts that are relevant to EA: http://www.hpmor.com/
It’s easy to make big plans and ask big questions, but a lot harder to follow them through. Find out what happens to Harry Potter-Evans-Verres, Hermione, Draco, and everyone else once they grow into their roles as leaders, leave the shelter of Hogwarts, and venture out into a wider world of intrigue, politics, and war. Not official.
“The best HPMOR continuation fic.” -Eliezer Yudkowsky
There is Eliezer Yudkowsky’s Harry Potter fan fiction “Harry Potter and the Methods of Rationality” (HPMOR), which conveys many ideas and concepts that are relevant to EA: http://www.hpmor.com/
Please note that there is also a fan-produced audio version of HPMOR: https://hpmorpodcast.com/
I also really enjoyed the unofficial sequal, Significant Digits. http://www.anarchyishyperbole.com/p/significant-digits.html