David Hamblen

David Hamblen brings a lifetime of craftsmanship, curiosity, and quiet leadership to Learn & Do Academy. Born in pre-war 1938, he came of age in a generation that valued service and follow-through; principles that still shape his work today. As a U.S. Air Force veteran, he learned discipline, precision, and teamwork – skills he now applies to the Academy’s financial and organizational foundations.

A lifelong tinkerer and tech enthusiast, David has always enjoyed understanding how things work and how to make them better. From balancing budgets and building systems to restoring tools others might discard, he approaches every task with a blend of practicality and invention.

Now a great-grandfather, David embodies the intergenerational heart of Learn & Do, the belief that wisdom and skill should be shared forward. When he is not mentoring or problem-solving for the Academy, you’ll often find him riding the open roads of southern Arizona on his motorcycle or working side by side with Liz on their desert homestead. Together, they continue to learn, build, and live the values they teach.

Learn about our other team members

Elizabeth Letner

Elizabeth is a nurturer by nature and a nurse by profession. She has spent her adult life raising five children, caring for patients, and exploring the deep connections between food, health, and well-being.

Curtis Letner

Curtis is a builder, creator, and lifelong entrepreneur. Since the age of 20, he has started and operated several independent businesses, including a custom countertop shop, a custom cabinet business, and a commercial property venture.

Elizabeth (Liz) Jane Davis

Elizabeth “Liz” Davis leads Learn & Do Academy with a spirit of openness, creativity, and grounded integrity. Born in postwar 1946 Georgia, she grew up learning that every challenge could be met with resourcefulness, humor, and heart.

Dani Urban

Organizing and making sense of everything on this planet is one area in which Dani has excelled from an early age. She thrives when community forms from connections through communication, creativity, and compassion.