Change wordpress.com site to wordpress.org, use fashopper or similar theme

H-E-L-P!!! We are a social enterprise - creating work for women in northern Bali. Hand woven and hand sewn products now include fashion designer dresses, tableware and other items. The only problem we have is reaching fashion/green/ethic conscious women in the developed world. I want to stay with Wordpress as I am reasonably familiar with it and can manage loading images, writing content etc., but do not know CSS or how to convert from [login to view URL] to [login to view URL] site. At this stage we are not looking for promotion, just getting the site ready. We envisage that this is in the small project league, but unable to pay that sort of money. If you have a big heart, want to help women put food on their table and pay for their children's schooling, and want to use our site as a reference site, we are a possible customer.