My advice is to start with a business plan. Developing a good plan is key to you selling your idea. There are plenty of books on creating business plans. Check into SCORE, they sometimes can be helpful and they are free. I started several start-ups, the funding always comes when you have a solid profitable plan. I might sound a little harsh but age is not the reason your don't have the funding, its just an excuse. I understand what it takes to start your first business at your age. If you are close to giving up at this point you may not be ready to launch a start-up. Raising the money for the business will not be the biggest challenge you will face.