Depending on the amount of capital that you need to start off, there are a few options. You can borrow from a bank, which offer business loans (but you need to have a convincing business plan and credit history). Business loans need to be repaid at a certain time, with interest fees.
You can also search for Venture Capitalists in your area that will fund your business. If you convince them that you are worth investing in, they will provide the money in exchange for a certain percentage of ownership in your company (and thus the profits).