Invitation e-commerance

I am looking to build a custom web site to sell personal stationary and inventations. Something like [login to view URL] I need to introduce my products, set up e-commerance, copyrite, and whatever else I need to do to ensure a secure and professional web site, I will also look for the person who designs our page to maintain it and make changes as needed. (I understand this will be a extra charge) I am new to this but looking for something special to start my business