I just finished posting this but think it deserves its own post.
If you're creating a business or "startup" (as people like to call it these days) don't assume the idea is novel or investors will just jump on board. Focus on the business fundementals, money and cash flow, even before launch, unless you can afford not to. But really you can't afford not to. Selling before launch means that you're effectively doing two things 1 you're collecting new customers and income for the business and 2 you're. raising awareness at the same time. Obscurity is death and failure.

Get you a good sales team and marketer when the time is right.

Have a year of runway.

Identify the sites and groups your target audience and investors frequent. Start conversations now, buzz is the hardest thing to generate.

Start building relations with customers and potential clients now. Discuss launch, ask them if they'd be willing to pay up front before launch, in order to secure a "lifetime membership", offer it as an early opportunity and charge extra. Giving a discount out of the gate is a mistake B/c it says to potential investors that you don't think it's ready or worth it yet. Of course if it's between making 1. Some money or 2. No money, don't let it be a deal breaker, offer a discount. Going from no clients to any clients is a BIG deal. If you can do 1 you can make it to 10, if 10, you can reach 100, we etc.

No one likes asking for money and yet it is as important if not more important than development.