I am at a loss here. I am moving from blogger to wordpress, and I feel so out of my element and have a difficult time editing wordpress themes to meet my requirements. As I am trying to just emulate my blogspot template, I need the theme to be quite wide, have three columns and have an image-based navigation menu (you can see it here, http://www.strawberrykoi.blogspot.com) but I have had no luck finding a theme that matches those aspects in the slightest.
So now I have been looking into premium themes and them builders (like ithemes) but nothing has a free trial for me to know if they are as customizable as I need... so I don't even know if that's the right direction.
My question is, do premium themes really offer more than free ones? I don't want to buy one, if I have to work just as extensively to get the look of my old blog if I can do the same with a free theme.
...I know everyone hates "what should I do" pleas, but being so new to wordpress I don't have a full understanding of all my options. What are your recommendations?
Thanks in advance.