If you're looking beyond traditional funding (e.g. bank loans), you may want to look into crowdfunding. It's increasingly popular among new businesses; it's raised $5.1 billion over the past five years, according to Sage One.
There are two models of crowdfunding: peer-oriented donations (when someone makes a donation in hopes of receiving an incentive) and investment funding (where funders become owners or stakeholders in the company). Note that various crowdfunding sources will take a percentage based on the amount collected, and there are tax considerations as well.
Offer a menu of options at different price points, create a compelling story behind your idea (ideally incorporating a video), and use data to support your cause. Start with your own network and then branch out via social media. Just be sure to have a plan in place if your crowdfunding campaign succeeds.