Hey Aidan, you're doing well :-)

Have you learned about Firebug yet? This is an addon for the Firefox browser.

It let's you manipulate the DOM on any webpage live. So you ca add styles, html etc and change them all around right in the browser and see what the changes will look like without having to edit your own code and refresh the page each time.

I use this all the time. It is one of the most useful thing ever invented ;-)

You can also do this in other browsers now, but Firebug is by far the easiest tool to do it.

I hope that helps.