design website for our business&put us on ebay too

we are selling our language seminar CD under our own small company. mainly we want to sell through ebay and cdbaby and itunes,but still have to have our own website, that means the website will be simple! we already bought the service from the bluehost, they gave us ftp and all necessary information already. we need you to help build the website that has a fun and funny feeling, but also a website who can stimulate people's and kids' interests in learning chinese language and buy our CDs! of course, visitors can be directed to our ebay store or our cdbaby page or our itunes page!but also customers can choose to buy directly from our own website, so does that mean we have to buy some online banking system? do you have any suggestion? what about the ebay store? do you suggest we buy an ebay super seller first? cause i see ppl doing that on freelancer.com also, after you build the website, we need you to teach me how to update the website! e.g. how to send newsletters to many people at one time? one more thing, our website will have to be linked to our facebook and twitter both.