What I need to know?

I consider you as know nothing, zero knowledge of what is website and what its need to get it built.

A website is a place like home.

1. A home need an address so where people can get to. This address we call http address. A domain name.

2. A home need a space to be built. This space we called it hosting. A hosting is attached to a domain name via domain name server (DNS).
A hosting also related to FTP to upload files and mySQL database to install the script. This you have not to worry because we will do it for you.

3. A home need to be easy to manage, in the web we use wordpress as content management system. Its widely used and stable.

4. A home need to be look nice that is web design

The cost of maintenance that you need to pay is domain name and hosting. By purchasing our website package it is included all in it and paid for 5 years.
Web design, shop or content, hosting and domain.

So above points are briefly description of what you need to know.