There are lots of good tutorials about fetching data out of a mysql db. I suggest you to read them first. Second you need to know the SQL basics for creating queries..
you might want to try something like:
code to connect to db
$query = "SELECT a.authorname, a.authormail, b.columnauth, b.columndate, b.columnintro, b.columntext FROM authors a, colomns b WHERE a.authorname = b.colomnauth";
$sql = mysql_fetch_array($query);
while ($rows = mysql_fetch_array($query)) {
foreach ($rows as $row) {
echo $row."<BR>";
}
}
Note: this code may contain some errors but this is the basic way.. Have phun and you can mail me if you have some further questions..
GR>Jordy Querner
www.querner.com