WordPress + PHP script

I have several websites that are php script installs. I know very little about php. I am familiar with wordpress. I recently stuck a wordpress site in books.zag.nz/start and placed a index.html file in the front so that when you went to books.zag.nz it would go to the wordpress site. I then could make a nice landing page/splash page /entry page to the book shop. HOWEVER when i set it up to run the loading of the wordpress site from the entry of the books.zag.nz was way to long.So
My question what is the best way without working in PHP to place a WP site and get a fast load of site.
By the way I tried sveral things to speed up the load none seemed to work.

The page I need help with: [log in to see the link]