[topic title moderated - http://codex.wordpress.org/Forum_Welcome#Choose_A_Good_Topic_Title ]
Hi,
Sometime we need to setting homepage only link on our wordpress site.
We can easy to do this with plugin "Widget Context".
Get it for free at http://wordpress.org/extend/plugins/widget-context/
Just install it, and use text widget to place your link and set it to show only at front page/homepage only.
Generally this plugin can use for:
Show or hide widgets on specific posts, pages or sections of your site.
"Widget Context allows you to show or hide widgets on certain sections of your site — front page, posts, pages, archives, search, etc. It also features section targeting by URLs (with wildcard support) for maximum flexibility."
Thanks for reading this simple information.
Regards