How do I find investors for invention final prototyping, marketing, and other expenses?

That will make a big difference to potential investors and how much money is appropriate. Prepare a good overview of your business in a presentation. You might also write a short business plan or executive summary.

Then talk with a good business attorney that works with small businesses. If you are looking to start a company, the most important thing is that you have the skills, background and market knowledge to make your business a success and then of course you need to be able to sell yourself and the plan. For starting a company, the main sources beyond your own resources are either private investors (aka angels) and venture capitalists (VCs).

Getting VC financing is very difficult particularly in the current economic environment. They are looking for the combination of a compelling product/technology and the technical and managerial talent to make it a ... more.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.