Do you want to “Insert Author BIO in WordPress Post“? It is not so complex it is rather simple. Most often blogger want to share their BIO with their blog readers. I think It is best way to interact with new blog visitors / readers. This function is added in some WordPress themes by default, if this function is not available in your WordPress theme, then you can add it yourself. In order to add, open your theme folder and find file “Function.php”  open it in your favorite text editor copy code given below and past it in Function.php then save it.
[php]function get_author_bio ($content=”){
global $post;

$post_author_name=get_the_author_meta("display_name");
$post_author_description=get_the_author_meta("description");
$html="<div class=’clearfix’ id=’about_author’>n";
$html.="<img width=’80′ height=’80′ class=’avatar’
src=’http://www.gravatar.com/avatar.php?gravatar_id=".md5
(get_the_author_email()).
"&default=".urlencode($GLOBALS['defaultgravatar']).
"&size=80&r=PG’ alt=’PG’/>n";
$html.="<div class=’author_text’>n";
$html.="<h4>Author: <span>".$post_author_name."</span></h4>n";
$html.= $post_author_description."n";
$html.="</div>n";
$html.="<div class=’clear’></div>n";
$content .= $html;

return $content;
}

add_filter(‘the_content’, ‘get_author_bio’);[/php]
After saving all setting reload you web page to check effects of this
technique.