1. Change logo from navigation section. In navigation section(which is located top of the template) you can find navbar-brand where you can change the logo image or pull your text on a tag.
<!– logo –>
<a class="navbar-brand" href="#body">
<h1 id="logo">
<img src="img/logo-meghna.png" alt="Meghna" />
</h1>
</a>
<!– /logo –>
If you don’t know how to change image from html W3School can help to do in this page.