Paul Graham is the best trainer for indie developers looking to upgrade their product thinking quality — not a playbook. His frameworks on 'do things that don't scale,' 'schlep blindness,' and 'maker's schedule' apply directly to indie dev daily work. However, his experience primarily comes from VC-scale team startups, so some advice (fundraising, scaling, team management) needs adjustment. Recommended: use PG's thinking frameworks as cognitive infrastructure, combined with Naval's independent creation philosophy and more specific tool tutorials.