I suppose that since it is a domain you need a FTP client to upload your files into your server. There are a bunch of FTP clients you could get for free. At first it's tricky to understand but then is easy once you know the address of the server, password etc.
Then you need to have some knowledge of HTML. I learned from www.lissaexplains.com when I was a beginner years ago. You need to know how to add links, pictures, a backround, by using HTML, CSS, javascripts.
People will suggest you to use Dreamweaver etc, but those softwares are expensive. I learned to do it manually, even if it took some time to learn. With a simple HTML editor like EditPad Lite that lets you make changes into your code, save the file as a html file and view it on your browser, your fine.
Also you need to know how to design your own website by using a graphics editor like Photoshop, PaintShop Pro if you at least want to make a backround etc., but there are sites that offer free templates now.
The trick of this is to have a reference sites, that offers all the HTML, CSS, codes you need to add content to your website, so you can copy and paste it into a HTML editor such as EditPad Lite, DreamWeaver, FrontPage etc, and try to edit the HTML by manipulating numbers, letters etc, until it looks right into your website, and then upload it to your server.
WYSIWYG (What you see is what you get) editors are going to save you a lot of time when making a website since they automatically do everything for you. You just click some buttons and that's it, but they are going to cost you a lot of money.
It's going to CONSUME lots of your time, but if you like it then is going to be fun. I was so geeky years ago..........ha.