Index/Front Page Help

I am looking for some help with regards to my Elgg based website. I am interested in editing the Index/Frontpage/Login page for my site, and cannot figure how to do it manually. I have tried multiple plugins for some assistance, and have read many forums and community based website for help - however I am unsuccessful. I have included a link of what I would like it to look like, so hopefully that will give you guys an idea of what I want. I am really stuck here, and would really appreciate anyones help!

Oh and just for extra information, everything is centered to be positioned in the middle of the page - as it opens