There's no a special additional code to add your content. All you need to understand is the structure of html language pages so you can know where to paste your own content.
For example, if you want to use a table to show
Quote:
Name - Phone
John 1234567890
Mark 2345678901
Louis 3456789012
and your template is
<table>
<tr><th></th></tr>
<tr><td></td></tr>
</table>
You will need to undestand that
<table> starts a table
</table> closes the table
<tr> starts a new row
<th> starts a new column like header
<td> starts a new column
This would be the result
<table>
<tr><th>Name </th><th>Phone </th></tr>
<tr><td>John</td><td>1234567890</td></tr>
<tr><td>Mark</td><td>2345678901</td></tr>
<tr><td>Louis</td><td>3456789012</td></tr>
</table>
In other words, if you see a <> word inside it, you can google it and see what it is for so you learn how to get the most of your template, cheers.