Justin Jackson: https://twitter.com/mijustin
Courtland's Startup Validation Checklist: https://docs.google.com/document/d/1e-pmkZCM96V_3FhwYFK5ubY8l52YNk9j4i25HWt6oyY/edit?usp=sharing
Zero to One: https://www.amazon.com/Zero-One-Notes-Startups-Future/dp/0804139296
Mushbar Iqbal's episode on Indie Hackers: https://www.indiehackers.com/podcast/121-quick-chat-with-mubashar-iqbal
