QUOTE(heckyaaa @ 28 Oct, 2009 - 09:57 AM)

I'm having a few slight issues with tags such as <h1>, <p>, <li>, <body bgcolor>, etc. Curious what I would do so that they don't pop up errors while validating.
Yes, please validate that code. You'll get a gazillion errors, but you can get rid of most of them by simply learning how to nest your container tags.
For example (since you mentioned H1 and P tags), you have to close containers before you create new ones. Like this:
CODE
<h1>You Header</h1>
<p>Some text...</p>
NOT like this:
CODE
<p>
<h1>
<Font size="3"><b>Logitech MX Performance Mouse</b>
<br />
<img src="logitech mouse.png" alt="What a neat looking input" width="130" height="120"/>
<Ul>
Other tags (like DIV) can have other elements nested inside them.
CODE
<div>
<div>
<h1>Header</h1>
<p>Text...</p>
</div>
</div>
The W3C Validator will tell you all of this, but that's a quick lesson in what you're doing (horribly) wrong.