Malen'kii traktat o sluchae i sluchainostiakh - Krivin Iuber

I'm not very good at math, and up to that point, probability theory was the most mysterious theory in the world of :) but you always want to understand something completely incomprehensible. And I love non-fiction books, especially when the author is able to explain the topic on really simple examples. Besides, it tells interesting. I want to say that now I have become a little clearer - the book has graphs and interesting examples.) It's not a textbook, but it's something to read.)