So.. You know how to query the database for a specific record, and you can get the info into the form.
You can create a textlink:
<a href=\"page.php?id=".$id."\">Next page</a>";
// In the page.php you do you not select for the page with $id, but for
$id=$_GET['id'];
if(is_numeric($id))
{
$sql = "select * from table where id > $id limit 1";
}
Or you can do a similar thing with a form