Z-Y is a fantastic book, especially if you have a decent math education already. Soviet style math and physics education - if done well- teaches you how to think with math, i.e., mathematics as an augmentation of the human intellect in the Engelbartian sense. Somewhat paradoxically, it's a humanistic approach to mathematics education.

PS: https://mirtitles.org/ is a treasure trove for people who like books from the Soviet Era.