First step is putting a business plan together.
A well written business plan always makes it so much easier to obtain funding, opens doors so to speak, as it shows possible investors that you are serious about your idea and believe it can work.
With a business plan investors get a better understanding of your idea or concept, can see what you are aiming to achieve in the market you are targeting and the period it will take for them to receive return on their investment. Not only does it guide you in your business but guides your possible investors.