Also, how can I code the CSS to allow to me to import a picture to place to the left of my newly stacked title?

First, import the picture to your media library and grab the URL.
http://en.support.wordpress.com/media/media-add-new/

Next, here is an example showing how to add a background image to the site title in the Origin theme:

#site-title {
	width: 160px;
	height: 100px;
	padding-left: 110px;
	background: url('http://s.wordpress.org/about/images/wordpress-logo-notext-bg.png') -40px center no-repeat;
}

You'll want to replace the url() value with the link to the image you uploaded to your media library. Then adjust all of the numbers until the spacing looks good to you.

#site-title {
	width: 160px;
}

Add that to your Appearance → Custom Design → CSS editor and click the Preview button to see it working.

The
Peplum

Also, how can I code the CSS to allow to me to import a picture to place to the left of my newly stacked title?

This is nothing to do with our theme improvement and it is purely caused by your custom CSS. You have this in your custom CSS but the value "center" is not valid value for float property. I'm not sure what you are trying to do here but if you remove that, the navigation will line-up horizontally.

#access li {<br /> float: center;<br /> padding: 0;<br /> margin: 0;<br /> }

Hope it helps.

Any ideas for how to fix this? Thanks for any help!!