Help with Coding!

For my website: https://www.evony4noobs.com, I really need to someone to help me with the coding. Right now, I am using the K2 theme and my service provider is DreamHost. I only know some very basic coding and I am really struggling to do most things. Right now, I am hiding the current navigation bar, which is usually under the logo. Also, when I was editing my coding, my content moved to the left and will not move. So, what I need is help for my text to be auto-expand and adjusts to the edges, but not onto my widgets. Another thing, is that I need help with a new navigation system, since I absolutely hate top column navigations. I want an expand and collapse menu, which I can easily edit and move all my content to. However, if this is too hard to accomplish (and I know it probably is), then you can just give me the coding for a left sidebar. I know an excellent coding for expand and collapse widget, but it takes a long time to make, so I would much more prefer to make a left sidebar menu with an expand and collapse feature. If it helps this is my full current coding:

[code moderated as per forum rules - please use hte pastebin.
a link to your site is sufficient to access the stylesheet.]

Any help is much appreciated. Thanks in advance!