This took me a while to do so I thought I'd document it for future reference.

The Issue

See the restore default setting link at the bottom of this page in the footer?  I wanted to put one of the styled buttons behind it but then found that there's a lot more to do than just that.

Instructions

1. Open the templates/rt_affinity_j15/index.php
2. Look at the last few lines with the original code (below)
3. For this website template: 
   1. I've added the module-dark classes.
   2. Specified float:none to get rid of float:left
   3. Specified width of readon-wrap1 to the width of the button
   4. Specified margin:0 auto to center readon-wrap1

Original Code:

<?php if ($show_defaultsettings == "true") : ?>
	<a href="#" id="clear-cookies"><?php echo JText::_('DEFAULT_SETTINGS'); ?></a>
<?php endif; ?>

New Code:

<?php if ($show_defaultsettings == "true") : ?>
	<div style="overflow: hidden;float:none">
		<div class="module-dark readon-wrap1" style="float:none;width:200px;margin:0 auto">
			<div class="module-dark readon1-l"></div>
			<a href="#" id="clear-cookies" class="module-dark readon-main" style="margin-top:0px"><span class="module-dark readon1-m"><span class="module-dark readon1-r"><?php echo JText::_('DEFAULT_SETTINGS'); ?></span></span></a>
		</div>
	</div>
	<div class="clr"></div>		
<?php endif; ?>

Change Page Title in Website
Here are some instructions on changing the page title in Joomla! CMS to display both the actual page title and other stuff. As I like doing this for this particular website (my personal one) in every version of Joomla it's been upgraded to, I've noticed some differences that I've noted down below.

Specific Joomla Template Providers

Everytime I update this article, Joomla seems to come out with a new version. If you have installed Joomla 2.5, this is now a setting in the global configuration... The only problem is that your landing page becomes "HOME - SITENAME.COM" which is ridiculous and I'm sure Joomla will release a new version addressing this.

Hide Menu Item from Registered and Special

Refer to this link if you want to clean out a front-end admin interface with your website's style.  The following is from http://forum.joomla.org/viewtopic.php?f=32&t=252258&start=0 at this date/time.

Can't simply hide an item but can hide a menu (of course the menu could have been created with just one item with no title and positioned at the bottom of another menu; this would look like it was all part of one menu).

toubkal wrote:
This cannot be done by joomla administration but can be done by template code, you can have a module position in the template that is set to only show when the visitor is not logged in e.g. Code:

<?php if ( !$my->id ) {?> 
     <div id="topmod"><?php mosLoadModules ( 'top', -2 ); ?> </div>
<?php } ?>

Joomla extension disable menu link for registered users but not for public 

More Information: not so great, lot of text: 
http://help.joomla.org/content/view/476/146/

How to redirect the visitor after the contact page: 


Open Contact.php and go to line 473 - 475 and change the line:

$link = ‘index.php?option=com_contact&task=view&contact_id=’. $contact[0]->id .’&Itemid=’. $Itemid; 
mosRedirect( $link, _THANK_MESSAGE ) 

replace that code with the URL for the contact Thank-you page as defined as follows:

$link = sefRelToAbs( 'index.php?option=com_contact&task=view&contact_id='. $contact[0]->id .'&Itemid='. $Itemid );
mosRedirect( 'index.php?option=com_content&task=view&id=28&Itemid=102' );

Create thankyou page and menu item for ID, change this in the code to redirect to the item ID - remove menu item

You can probably find this information of the rocket theme forum but I thought I'd put how I resolved this here.

 The issue is basically that you want the background to stay in its position in the browser while the rest of the elements scroll about.

1.  Go to Extensions -> Template Manager> Edit the CSS for the template
2. You should be given an option of css files, select styles.css and click on the Edit button 
3. Look for these lines:
   copyrawstyler

   body.bgstyle1 #main-background {background: url(/../images/backgrounds/bgstyle1/bgimage.jpg) 50% 0 no-repeat;}

   1.  body.bgstyle1 #main-background {background: url(../images/backgrounds/bgstyle1/bgimage.jpg) 50% 0 no-repeat;} 
4. where 1 is the number of the style of the template I am setting the background for and I add the "fixed" attribute to this id.  This will yield the following:
   copyrawstyler

   body.bgstyle1 #main-background {background: url(/../images/backgrounds/bgstyle1/bgimage.jpg) 50% 0 no-repeat fixed;} 

   1.  body.bgstyle1 #main-background {background: url(../images/backgrounds/bgstyle1/bgimage.jpg) 50% 0 no-repeat fixed;}  
5.  Click on the 'Save' button.
6. The theme is getting it from a generated php file.  Look in the CSS folder of the template.
7. You should find a PHP file in this folder with the body.bgstyle# line you need to change as in steps 3 and 4.

This issue happened with a friend who was trying to upload extensions.  You should find that the configuration file is unwriteable (and that you can't change it using the joomla interface).

In the end to resolve this, he had to do a fresh install and double-checked the server settings for a subdomain. 

As with all Joomla articles and files, you need to check that they have been published and approved.  Sometimes you don't have to and it's all automatic, but if they're not showing:

• Check that they're in the right section and category
• Check that they have been approved and published