Ask HN: What marketing book helped you become a better marketer?

Hi HN,

There are so many marketing books out there, but most of them feel repetitive or not very practical.

I’m interested in book recommendations that helped you learn marketing and apply it effectively. Whether they're about growing a business, building an audience, or enhancing branding, I’d love to hear your suggestions.

What books made a real difference in how you do marketing?

Thanks!