Building a team - I will not promote

I’m in the VERY beginning stages of building a business. In the most basic explanation, it’s an app that will connect people and businesses. I’ve been doing market research, canvassing people in their daily lives, and designing the app using ai. I currently have a demo of the app and I’ve talked to a couple businesses that would be involved in the app and they think it’s a good idea. They also all liked the demo. When I spoke to the businesses it was in the name of market research, not a sales pitch. I really believe in this idea but I’m trying to figure out the next step. I have no business or coding experience. I also have no start up money. If there are resources I can use to learn more about business I will gladly use them. I think there’s very little I can’t learn. But I also want to err on the side of caution when it comes to the physical app because I want the data stored to be very safe and protected and I doubt the ai app I’m building will be good enough. At what point do I need to start building a team? And what method? Should I find people willing to be partners for equity so this can really be built? Should I take classes? (That’s probably the longest option which makes me nervous) Should I fundraise so I can pay a salary out of the gate? If I start fundraising, what do I need to do to protect the idea from getting stolen? I feel like I’m pushing my luck with the number of people I’ve talked to about this.