Ask HN: What books an Entrepreneur should read?
This topic is purposely too general. Because, I don't want to miss out books like "Guerrilla Marketing", which gave an overview of marketing in 3 days for me. There were books about Behavioral economics I finished, which were so helpful, eventhough it doesn't have immediate effect on my business.
So, the general question is, what books were useful to you in building your business.