Hi, there are two different ways of making sections on your page.
You can use either divs (divisions) or tables. I personally use divs because they are the 'proper' way of laying things out.
To create a div, you should do something like this:
<body>
<div style="width:100px;float:left">
<p>Put your sidebar content here</p>
</div>
<p>Put your main content here</p>
</body>
