WordPress MU

i am not very familar with php,i want to show the newest posts of all the users,how can i do that?
get_last_updated() then get_blog_post($blog_id,$post_id)?
like that?or is there a function like get_last_updated_posts()?
by the way,where can i find a full templete functions document of wpmu?
silly questions.
hope anyone can help.
thanks.

Not a silly question - I am suffering from the same problems as well. We don't have a detailed Codex for MU yet - only 2 functions are explained -(

We would have to wait for someone experienced to show us the way

In the download, in the default home theme that is initially set for you, the code is there. look in wp-content/home/home.php.

Otherwise, you can go to wpmudev'org/plugins/ and get any one of the most recent posts, or just parse the sitewide feed.

Thanks.
I found this and it works.

/*
Plugin Name: WordPress MU Recent Posts
Plugin URI: http://atypicalhomeschool.net/wordpress-plugins/
Description: Retrieves a list of the most recent posts in a WordPress MU installation. Based on (Andrea - fill this in)
Version: 0.3
Author: Ron Rennick
Author URI: http://atypicalhomeschool.net/

*/

function ah_recent_posts_mu($how_many = 10) {
global $wpdb;
$counter = 0;
// get a list of blogs in order of most recent update
$blogs = $wpdb->get_col("SELECT blog_id FROM $wpdb->blogs WHERE
last_updated >= DATE_SUB(CURRENT_DATE(), INTERVAL 1 DAY)
ORDER BY last_updated DESC");

if ($blogs) {
foreach ($blogs as $blog) {
// we need _posts and _options tables for this to work
$blogOptionsTable = "wp_".$blog."_options";
$blogPostsTable = "wp_".$blog."_posts";
$options = $wpdb->get_results("SELECT option_value FROM
$blogOptionsTable WHERE option_name IN ('siteurl','blogname')
ORDER BY option_name DESC");
// we fetch the title and link for the latest post
$thispost = $wpdb->get_results("SELECT post_title, guid
FROM $blogPostsTable WHERE post_status = 'publish'
AND post_type = 'post' AND post_date >= DATE_SUB(CURRENT_DATE(), INTERVAL 1 DAY)
ORDER BY id DESC LIMIT 0,1");
// if it is found put it to the output
if($thispost) {
echo '<li class="page_item">guid
.'">'.$thispost[0]->post_title.' by <a href="'
.$options[0]->option_value.'">'
.$options[1]->option_value."