Create wordpress multisite network

I have 3 different domain names with Godaddy that I would like to have setup as a Network site, so that I can have different content on each site, but have woocomerce, and wplister Ebay store that all sites use as one database. 3 websites will be built with different themes, images, templates, wording, and maybe even languages. The main objective is to have E-commerce on all sites and when something is listed or sold, it removes the inventory from all sites simultaneously. domains hosted by Godaddy Cpanel hosting one hosting plan with 20 plus domains set up as add ons hosting plan set up on domain that is currently not being used ([login to view URL]) Main network domain [login to view URL] domain #2 [login to view URL] domain #3 [login to view URL] I do not want to have it as a subdomain or subdirectory. when someone enters a url whichever one they enter is how I want it to appear in browser (i.e. [login to view URL]) correct (i.e. [login to view URL]\[login to view URL]) incorrect I just need it set up and a quick tutorial on how to do it and I will enter data and plugins from there. Design Type: New Website Purpose of the Website: Ecommerce Additional Comments: should be pretty self explanatory! Thanks