making skins, i need some help on some html meanings Options

[jacksparrowsgirl...]

first of all, i have the basic code, but where do i put the image that i want to use as the background? And how do i know how to position the blog so it fits onto my image correctly?
Secondly, how, if i have on my image like, profile, claf, etc., how do i link those to the right places? Is there a really good tutorial on how to make ur own skins somewhere? Please help me! thank you so much!

[jacksparrowsgirl...]

but can anyone explain this code to me?

<!-- begin code provided by createblog.com -->
<style type="text/css">
body {
background-color: #000000;
scrollbar-arrow-color: #B991C9;
scrollbar-track-color: #FFFFFF;
scrollbar-shadow-color: #B991C9;
scrollbar-face-color: #B991C9;
scrollbar-highlight-color: #B991C9;
scrollbar-darkshadow-color: #000000;
scrollbar-3dlight-color: #000000;
}

//blogringdocument.write
.left, .blogbody, table.footer, .standard, .leftmodulefontcolor, td, p {
/* edits main text */
font:normal 11px arial;
line-height:10px;
color:black;
letter-spacing:0px;
text-align:justify;
}

table.footer TD {
/* this makes the footer at the bottom centered */
/* leave it alone unless you know what to do*/
text-align: center;
}

div.blogheader, .caption {
/* edits the dates */
font-family:Arial;
text-transform:uppercase;
font-size:14px;
line-height:10px;
font-weight:bold;
color:#C991AE;
letter-spacing:0px;
background-color: #000000;
text-align: left;
}

a:link, .footernav.link, a.footernav:link, a.footernav:active {
/* edits all links */
color:#B991C9;
font:normal 11px arial;line-height:10px;
text-decoration: none;
}

//blogring.document.write
a:visited, a.footernav:visited,  {
/* edits the links that the user has visited */
color:#B991C9;
font:normal 11px arial;
line-height:10px;
text-decoration: none;
}

a:hover {
/* edits when user mouseovers the links */
color:#9D91C9;
font:normal 11px arial;
line-height:10px;
cursor: ne-resize;
text-decoration: none;
}

input, select, textarea, .textfield, .button {
/* this edits the buttons, dropdowns, etc. */
border: 1px solid #c0c0c0;
font:normal 11px arial;
background-color: #FFFFFF;
letter-spacing:0px;
}

table.left {
/* this edits the menu module */
border: 1px solid #c0c0c0;
width:160px;
background-color: #FCEBFF;
}

table.blogbody {
/* this edits the other the place where the  blog is */
border: 1px dashed c0c0c0;
background-color: #ffffff;
width:400px;
}

table.left th {
/* on your menu module, this edits the title part of it */
/* like BLOGRINGS, POSTING CALENDAR, etc */
background-image: url(http://url.com/to/the/site/image.gif);
background-color: #FCEBFF;
font: bold 11px arial;
text-transform: uppercase;
color: #C991AE;
border: none;
}
table.left TD {
/* on your menu module, this edits the body part of it */
background-image: url(http://url.com/to/the/site/image.gif);
background-color: #FFFFFF;
border: none;
}

table.search TD, table.search, table.announcements {
/* border of search bar (if you have it) */
background-color: #FCEBFF;
border: 1px solid #c0c0c0;
}
table.search TD, table.announcements TH {

/* this should be left alone */
/* unless you know what to do */
border: 0px solid #c0c0c0;
}
table.navigation, table.main, table.footer {
/* the width of your blog with modules */
width: 500px;
}
hr {
/* horizontal divider */
border: 1px solid #FCEBFF;
}
</style>

<!-- end code provided by createblog.com -->

i wanna try and use this code to create my own layouts. i understand it for the most part, im just not sure where to put the background image and do i need to use mapping or anything like that to make the links work?