Changing admin bar and other questions

based on http://sumtips.com/2011/03/customize-wordpress-admin-bar.html

and
function wp_admin_bar_my_account_item( $wp_admin_bar ) in /wp-includes/admin-bar.php

add this to functions.php of your theme:

function customize_adminbar_appearance() {
	global $wp_admin_bar;
	$current_user = wp_get_current_user();
	$user_id      = get_current_user_id();
	$avatar = get_avatar( $user_id, 16 );
	$wp_admin_bar->remove_menu('wp-logo');
	$wp_admin_bar->add_menu( array(
		'id'        => 'my-account',
		'title'     => $current_user->display_name . $avatar )
	);
}
add_action( 'wp_before_admin_bar_render', 'customize_adminbar_appearance' );

the picture is the user’s gravatar -> http://en.gravatar.com/

how can i move my posts to differen pages

try to organize your posts, using categories.

when you link to the category archives, you’ll get posts sorted by category.

otherwise, you could create page templates with a custom query to pull posts of your choice, probably according to category;

review:
http://codex.wordpress.org/Pages#Creating_Your_Own_Page_Templates

and you could use some code to exclude certain categories from the home page; http://codex.wordpress.org/Plugin_API/Action_Reference/pre_get_posts