Log-in the user with LightOpenID

Hello
I have downloaded LightOpenID (http://gitorious.org/lightopenid) few hours ago but still can't figure out how to make it work.
I got this google example saved in test.php file

<?php
require '../lib/init.php';
require '../lib/openID/openid.php';

try {
    if(!isset($_GET['openid_mode'])) {
        if(isset($_GET['login'])) {
            $openid = new LightOpenID;
            $openid->identity = 'https://www.google.com/accounts/o8/id';
            header('Location: ' . $openid->authUrl());
        }
?>
<form action="?login" method="post">
    <button>Login with Google</button>
</form>
<?php
    } elseif($_GET['openid_mode'] == 'cancel') {
        echo 'User has canceled authentication!';
    } else {
        $openid = new LightOpenID;
        echo 'User ' . ($openid->validate() ? $openid->identity . ' has ' : 'has not ') . 'logged in.';
    }
} catch(ErrorException $e) {
    echo $e->getMessage();
}
echo '<pre>'.print_r($openid,true).'</pre>';
?>

Where init.php is init file for my page (constants, classes, functions, db connection etc.).
After running this code I got button with label "Login with Google" and after pressing it

echo '<pre>'.print_r($openid,true).'</pre>';

give some info about the $openid object

LightOpenID Object ( [returnUrl] => http://kur.com/openid.php [required] => Array ( )

[optional] => Array
    (
    )

[identity:LightOpenID:private] => https://www.google.com/accounts/o8/id
[claimed_id:LightOpenID:private] => https://www.google.com/accounts/o8/id
[server:protected] => https://www.google.com/accounts/o8/ud
[version:protected] => 2
[trustRoot:protected] => http://kur.com
[aliases:protected] => 
[identifier_select:protected] => 1
[ax:protected] => 1
[sreg:protected] => 
[data:protected] => Array
    (
        [login] => 
    )

)

...nothing special... and thats it...
I spend lot of the time searching for tutorials in google, but can't find even one. Can you please help me.
How to log in the user ?
From where I must get logged user info (as username, mail) ?
I have never been using open ID and I'm confused....
Thanks in advance

Solution

This script is now working fine from my localhost running apache on my laptop with a wifi connection to the internet.

I've been told that you should pass your domain to the new LightOpenId object when creating it.

$iniConfig is a parse_ini_file array stored outside the document root where I store all my important variables.

in this case

[openid] 
domain='mydomain.com'

So, I create new object and include the domain the server is on:

$openid = new LightOpenID($iniConfig['openid']['domain']);

I wrote it this way, and haven't checked to see if it works without the domain..