Walden on Wheels: On the Open Road from Debt to Freedom (2013) by Ken Ilgunas

 Memoir of guy who put himself through grad school at Duke University without debt by living in his van.  Very interesting guy. He worked as a ranger in Alaska, worked at Home Depot and others. It's philosophical and also kind of a hands on account of how he did it. This should definitely by read by anyone who wants to get through school and life with as little debt and as much independence as possible.