I was wrong before. I took a closer look at the Tuned Balloon theme, and now I see there is one way to have a sidebar on a category page. The theme has a special exception for the "Media" category — that category will display a sidebar using the widgets from Appearance > Widgets > "News Page - Right Sidebar"
Another way to have a sidebar is if you setup what is called a static front page and then set the posts to display on another page.
There is not a way, however, to add a sidebar to an ordinary category page in the Tuned Balloon theme on WordPress.com.
I need them to only display a certain category on a certain page. So "archive by category". For example this website, http://www.thissongslaps.com/category/electro-house/
This is not something you can do with the Tuned Balloon theme on WordPress.com. To get a category page that looks like that, you'd either have to switch to a theme that has that setup already (or something close that you could adjust using CSS) or you would have to switch to a WordPress.org setup and a separate web hosting account where you can get full control of the PHP code and not just the CSS which is what you have here at WordPress.com. I think you should stick to WordPress.com unless you're really keen on getting full control over all the exact layout details you have in mind. Of course, :) I'm biased.
Sorry about all these questions, its just frustrating knowing what you want and not being able to do it.
No problem! I totally understand.
There's actually a whole slew of information about how to configure this theme at http://theme.wordpress.com/themes/tuned-balloon/support/ and it looks like it can get pretty detailed! I can see how it could be a bit overwhelming if you're just starting out with it. I can help! And that support page should hopefully help a ton too.
Also I moved the page title and menu inwards a bit but how would I also move the page content and side bar in as well so that it lines up?
I answered this in a separate post. It can get super confusing if you start asking the same questions in several different locations though, so could we stick to one topic per thread? That would be helpful to me.
I think the next best steps from here would be to first make a decision about whether WordPress.com is the right, best place for you considering your end goal. Can you let me know if you have any specific questions about this? Also see http://en.support.wordpress.com/com-vs-org/
After that, I think we should go through http://theme.wordpress.com/themes/tuned-balloon/support/ by picking one area at a time and diving into it.