Can there be any wordpress plugin available that we may use to publish custom content on my small top of the page?? I'm using top of the page that has connect to other blog pages. I wish to put custom content about this top of the page however i am not able to locate any wordpress plugin.

whatever plug ins that we looked gives this facility for sidebar inside a widget format there have been no choice for by hand putting content during my theme.

Also can you really put latest publish by a specific author in this article??

You have to edit index.php file in you are theme to get this done . take a look at query_posts , things i would recomend is getting a category known as home_content and limit all of the theme files using query_posts to not reveal that category , and show posts from that category only around the home page ( index.php file from you are theme ) .

You can allso request wordpress related questions about wordpress.stackexchange.com