You can make it simple if you want to. Try searching for a game site template somewhere on the internet. Also, I would recommend using Photoshop when doing buttons, navigation bars or whatever graphics you might want to use on your site's GUI. It is also important to have 1 "color theme". You don't want a viewer to see rainbows when visiting your site.
There's also tons of free web hosting sites around there. Try subscribing to one. Lastly, there's also tons of free website builders for beginners and pros.