There are many Webhosts on the internet that offer free webspace and the nessessary tools to create websites. HAve a look here click here for a list of free website providers.
For help and advice on webpage design click here
Alternatively, you can get a WYSIWYG (What you see is what you get) web design program. If you have office installed you may have a copy of frontpage or frontpage express. I don't know of any free ones on the net so you may need to pay if you want a web design program of your own.
Just a suggestion. There is a web page design magazine out now and it has a CD-ROM packed with web developers programs. Its giving away a free full version of 'WebPlus 1.0' a web design program. There are also demos and trial versions of others such as dreamweaver MX etc.
The magazine is called Webpages made easy.