Paul,
If you do not know what you are doing, you are likely to get stuck for hours on what the Americans call "$ 20 problems". In other words, you could pay someone twenty dollars to cure the problem that takes you all day and drives you nuts.
I've said on here before that I think Mark at carpetcleaningwebsites does not charge nearly enough. He'll do you a decent site that should do OK locally (without any further promotion) for a very reasonable amount.
You could have one of his and earn money fairly quickly. You could then try to do one yourself and have some fun learning without any pressure to make money straight away.
If you really want to do one yourself, have a look at Wordpress (
http://wordpress.org/) and all the tutorials at Wordpress.tv (it's all free).
Best of luck,
Garry