I've installed mySQL - What now?

Original - php Code <? $user="root"; $host="localhost"; $password="**********"; $database="userdatabase"; //open connection to the MySQL database server. $connection = mysql_connect($host,$username,$password); //if connection fails, display the error involved if ($connection == false){ echo mysql_errno().": ".mysql_error()."<BR>"; //echo("Your username or password is not correct."); exit; } $create_success = mysql_create_db("users"); if($create_success)echo("<b><font color="blue">create database: success!</font></b><br>"); $select_success = mysql_select_db("users"); if($select_success)echo("<b><font color="blue">selected the created database: success!</font></b>"); $query="CREATE TABLE users ( id int(6) NOT NULL auto_increment, username varchar(30) NOT NULL, password varchar(30) NOT NULL, email varchar(40) NOT NULL, class int(4) NOT NULL, role varchar(10) NOT NULL, average int(3) NOT NULL, points int(4) NOT NULL, tests varchar(256) NOT NULL, blank1 varchar(10) NOT NULL, blank2 varchar(10) NOT NULL, blank3 varchar(10) NOT NULL, PRIMARY KEY (id),UNIQUE id (id),KEY id_2 (id))"; mysql_query($query); mysql_close(); ?>

 
<?
$user="root";
$host="localhost";
$password="**********";
$database="userdatabase";
 
//open connection to the MySQL database server. 
$connection = mysql_connect($host,$username,$password); 
//if connection fails, display the error involved 
if ($connection == false){ 
  echo mysql_errno().": ".mysql_error()."<BR>"; 
  //echo("Your username or password is not correct."); 
  exit; 
}  
 
 
$create_success = mysql_create_db("users"); 
if($create_success)echo("<b><font color="blue">create database: success!</font></b><br>"); 
$select_success = mysql_select_db("users"); 
if($select_success)echo("<b><font color="blue">selected the created database: success!</font></b>"); 
 
 
 
$query="CREATE TABLE users (
id int(6) NOT NULL auto_increment,
username varchar(30) NOT NULL,
password varchar(30) NOT NULL,
email varchar(40) NOT NULL,
class int(4) NOT NULL,
role varchar(10) NOT NULL,
average int(3) NOT NULL,
points int(4) NOT NULL,
tests varchar(256) NOT NULL,
blank1 varchar(10) NOT NULL,
blank2 varchar(10) NOT NULL,
blank3 varchar(10) NOT NULL,
PRIMARY KEY (id),UNIQUE id (id),KEY id_2 (id))";
mysql_query($query);
mysql_close();
?>