Inserting graphic in index.php – cannot find way to edit html

OK, this is probably a really stupid question, and it’s more than likely right in front of me, but I am not seeing it.

I am trying to insert a graphic image in my template, but cannot find the html file that I need to edit.

I was able to make an index.html and add the graphic where I need it.
https://www.mylifemymoney.org/index.html (the Spokster image on the left with a bit of text under it), but on the index.php page, I cannot see how to add the code that I need.

https://www.mylifemymoney.org/index.php

Below is the code in bold that I would like to add:

<div class="side1">
<div class="gap1">
<ul>
<li class="about">
<h2>About</h2>
<p>
<img id="avatr" class="ileft" alt="You Avatar" src="https://www.mylifemymoney.org/wp-content/themes/skyscraper-10/images/you.jpg"/>
Welcome to the MyLifeMyMoney website! MyLifeMyMoney is the perfect package of financial tools and products for adults ages 18-34, aka Generation Y. Surf around, check it out, and see why MyLifeMyMoney is the perfect way to bank&.for your generation.
</p>
</li>
</ul>
<strong><p>
<img id="avatr" class="ileft" name="avatr" alt="Spokester" src="https://www.mylifemymoney.org/wp-content/themes/skyscraper-10/images/Spokester-Logo.jpg"/>
Click here to learn how YOU can become our PAID spokesperson for a year!
</p></strong><ul>

I am using Firebug, and can see it while inspecting the code…just don’t know how to change it.

Any help would be appreciated.