Instead of telling you how terrible your site looks, I'd like to say that you've started where you could and done what you can, and that is worthy of recognition, whether or not the result is aethetically pleasing or standards compliant. However, like all beginnings, it is not perfect and therefore is in need of modification. To begin with, all of your documents ought to begin with a document type defition (DTD). This exclusively case-sensetive tag explains to the user agent (browser, for example: internet explorer, mozilla, opera, netscape, safari) how it should render the document. When this tag is not present, each browser will render the document according to its default DTD. This tag is required by the World Wide Web Consortium (W3C). As you may have guessed, there is more than just one DTD, so your question now may be, "which one do I use?" or "where is a list?" I have provided a link to show you a list of them; this page will also show you how many there are. You should use whichever one your version of HTML or XHTML corresponds with it. (For example, you would use the HTML 4.01 DTD if your document was written in HTML.)
Once you have done that, you should begin using CSS to layout your page. Eventually you will advance enough with the combination of HTML markup and CSS design to result in a very aeshetically pleasing Web site (examples: http://www.ryanbrill.com/, http://www.mezzoblue.com/, http://www.csszengardenc.om/).
I hope this helps you on your learning journey to make a beautiful site, yet at the same time an accessible one.[/font]