Sell a kidney. I hear they fetch good money on ebay!
But seriously, I'm not sure about the helicopter fraternity, but with fixed wing it's very difficult to get any sponsorship. I'd recommend working for a few years (not going to uni as this is 3 years when you will be racking up debt and not earning anything. I don't think a degree will help you get a flying job) If you get a good job and save every penny, then within a few years you'll prob have half of what you need to learn to fly. Then borrow the other half from a bank or parents.
I've got to stress that I don't know much about the helicopter world, but I would check out the career possibilities with the various qualifications available to CPL(H) holders. I am under the imression that really you need to have an IR and a multi rating to be able to make proper money.