To edit your link at horizontal menu bar, its easy, just go to Layout-Edit HTML.
Find codes below and edit :
<div id='menu'><ul>
<li><a href='/'><span>home</span></a></li>
<li><a href='http://blog-howtotricks.blogspot.com/'><span>Blogger Tricks</span></a></li>
<li><a href='http://www.forfreebloggertemplates.com/'><span>download template</span></a></li>
<li><a href='#'><span>contact us</span></a></li>
<li><a href='#'><span>edit link</span></a></li>
</ul>
</div>
Change red text with your link, and blue text with your anchor text