Replace Text in Pixel Theme to Logo

How and where do I replace the text in Word Press to my logo?
I know this is an ongoing issue but so far I have tried everything I have found. I know I must be missing the snake in the room but please help.
My theme is Pixel I would also like to delete the page titles.

<div id=”logo”>
<h1>“><?php bloginfo(‘name’); ?></h1>
<span><?php bloginfo(‘description’); ?></span>
</div>

Novice layman terms would be greatly appreciated.
http://www.karmascenemagazine.com