First off...is it possible for one person to build an entire e-commerce (e-business, ecommerce, ebusiness) store all by themselves, or does it require several people of different expertise?

Second, most people who have an online store paid developers & companies to build their site or they buy these out-of-the-box websites. I want to be the person who creates those sites, not the one who doesn't have much experience and pays to have it done for them.

Which degrees will teach me how to do this most effectively (e-business degrees, web development degrees or web design degrees)?

Which schools do you recommend?

Thank you for your time in advance!