I am from Russia (not in local lw.ru). I have read HPMoR at age 12 and it immediately became my favourite book and holds it’s place even now. I find Eliezer Yudkowsky’s views on most things the most convincing of all the other I saw.
More detailed version organized as Shortform comments thread: https://www.lesswrong.com/posts/zbSsSwEfdEuaqCRmz/eniscien-s-shortform?commentId=JtpxcmxMt2ycd4K5s