if you don't know anything about web design i recommend www.webeden.co.uk

They offer free hosting (with ads) & free trial and you use their online tool to build your website. Its dead easy, to do, bit like desktop publishing. If you want to have your own domain name then buy that from companies such as 123-reg.co.uk and then follow the instructions on webeden's help pages on how to point your domain name to their server.