Simplest advice, don't worry about all that right now. It sounds like you have the idea and can do some programming. Don't worry about design (use Bootstrap or

Simplest advice, don't worry about all that right now. It sounds like you have the idea and can do some programming. Don't worry about design (use Bootstrap or some other framework to come up with a basic look) or building a business just yet. Focus on building a prototype. At this stage it doesn't matter too much what it looks like. Talk to potential customers/users and find what is important to them. See if you can get them to commit to testing your product and giving feedback, or possibly being your first customer. Attend meetups (meetup.com) or other tech events in your area. Meet people with similar interests. Get to know them. Don't just bring them onboard because you met them once and they seemed like a nice person. At the same time continue building your prototype. As you meet more people and start building relationships with them, eventually something will click.