SPI 206: How SPI Reader Robert Duff Is Building Passive Income with Books on Amazon
#206: Here with me this week is Robert Duff, Ph.D., a psychologist who's supplementing his income by selling his books on Amazon. We discuss how to create and sell books for print, digital, and audio. Podcast show notes available here:
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Cameron Long
Cameron is a seasoned CFO and CPA with 31 years in finance. He created the AI Trader's Playbook to help everyday investors use AI to find high-confidence trades — in minutes, not hours.
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