blog going crazy!

i have several question,, i have been searching the site for hours, bu it still doesn’t work.
my blog can be found at http://jodydonnelly.com if you want to see the problem.
1. i have several categories of blogs: journal, column, articles… as you see, and now i would like an archive by category and postbypost but when i use wp_list_cats he says i have no categories, am i doing something wrong?
2. my footer keeps floating on my header, how can i move it to the footer?
3. when i write a page, i get 404 when i view it, it says that it is categorized but i didn’t do that, how can i create a page and view it properly and how canplay my contact form

id appreciate any help, thanks