codingpet

What’s your site URL? is it online? Are you sure the shortcodes is correct?

This is one I used before http://wordpress.org/extend/plugins/news-announcement-scroll

wp-admin->settings->general->site title will be the name if your theme is written in a proper way. Show Your Site URL will make it easy to get help.

Please don’t edit core codes directly.

Not sure where would you like to enable it for all users? Visual editor is enabled for writting posts/pages only by default. All users have the capability to write/edit posts will see the visual editor.

if ( $paged >= 2 || $page >= 2 )
		echo ' | ' . sprintf( __( 'Page %s', 'yourthemename' ), max( $paged, $page ) );

This code will be helpful. You can check how to title was written in twentyeleven theme to get a clear idea. Basically, you need to add the page number to the title to avoid the issue.

It depends on the codes in the template. By default, the_excerpt() will not link to the full post. You can use the codes below to make it clickable. The codes can be added to functions.php of your theme.

function new_excerpt_more($more) {
       global $post;
	return ' <a href="'. get_permalink($post->ID) . '">[...]</a>';
}
add_filter('excerpt_more', 'new_excerpt_more');

You can also check this docs to learn more:
http://codex.wordpress.org/Function_Reference/the_excerpt

Hi,

My site is also using a pre-existing subdirectory install. I made the changes the same as described in the article. No problems happen. Did you copy and modify the .htaccess and index.php as described?