Walker Deibel (Buy Then Build) joins Matt and Kolby to talk about how he wrote a category-defining book, built a newsletter to 300,000 subscribers, and used that list to raise $4 million in four hours. They cover his grassroots book launch strategy, why he believes newsletters are the most impactful asset any entrepreneur can build, and his framework for navigating private capital markets as what he calls the "new family office." Want to get your first 1,000 newsletter subscribers in 30 days?...