[Theme: ThemeTrust Clean template help

I am new to wordpress. I have imported the demo content because I liked the way the demo site looked. I have created my menu and have base pages to work from.

I need to know:

1. How to upload images into the home page animated slideshow. I have tried a few times. They do not show up in the correct area of the page.

2.How to add images and content to pages.

3.How to remove the ‘leave a reply’ blog comment field at the bottom of each page.