Learn more about funnels with these marketing books. Both are under $20

Marketing Made Simple by Donald Miller with J.J. Peterson

What I love about this book is that it gives you the essentials of marketing in a straight forward simple way. It's step-by-step and easy to implement powerful strategies that will grow your business. https://amzn.to/3eGvXKo

The 1-Page Marketing Plan by Allan Dib

My favorite thing about this book is that it breaks down marketing into very simple concepts. There's a 1-page marketing plan template inside that's very useful. https://amzn.to/3JyUnnB