You need to start by identifying why your product is unique or different, and the reasons customers would be interested. This provides the foundation for your Website, and sales and marketing collateral, elevator pitch, etc.

Next, I would focus discover your core customer - who's going to buy it, what are their needs and points of pain, what's the buying cycle, where do they find information, etc.

Third, you try to get business traction by combining your story with your customer personas. Hopefully, this starts to get your business traction, which could attract investors.