Build a Website

I am looking to have a website designed for use in posting pictures and descriptions of Furniture that we sell, as well as, the general items such as: Contact page, General Main page list our services and pictures... and continued pages listing SOLD AND FOR SALE times.. We sell now on Craigslist.. but, seek to have our own site so that clientele can go to to see what is currently for sale, as well as, furniture that has sold. I would like an internal input page, our internal program so to speak..... very much like craigslist asks questions, descriptions and various fields, including pictures, for uploading to their site. In fact, the general fields that Craigslist has for posting would be great.[but probably not as many fields as they use] Being able to upload 20-25 pictures per item onto site,Title, phone, address, location, Item description... and ability to "edit" at will. You could go to craigslist and view their input and upload pages... and this is generally what I'm looking for.....only I want the pictures and descriptions to upload directly to "our" site. This program and webpage will be for our internal use --- for uploading to furniture items to our personal site, with descriptions and ability to edit... This site should be simple for user.. and include drag and drop for pictures with easy navigation.