100% correct.
1. Get a demo ready that you can show on a laptop. Focus on features.
2. Smile and dial. Set a meeting with the business owner or manager to show the demo.
3. Listen. The things they say (mostly objections) will guide your product development.
4. Accept rejection. You will get meetings from 10% of your calls. You will make sales on 2% of your meetings if the customer even needs the product.
Reading is a good way to forestall the heartache of actual sales, but that's it. Everything you need to know you'll learn in meetings.