Coding and web features added to wordpress site

I am looking for someone who knows well about wordpress since this is what my website was build using: Fixtures needed in the site: I accidently removed the coding for users to post comments on articles on the site. I want this option to be available for the users but only they can post comments only on articles/posts not pages. Second there is a single page i created ([login to view URL]) that I would like to remove the sidebar from it and to make the content of the page wider for ONLY that particular page so that it can occupy the space up to where the sidebar was. Third, on the website homepage, there are five sections: Weekly Featured Articles Islam Theology and Science Distortions About Islam Ramadan: The Month of Fasting Hajj: Pilgrimage to Mecca each of those sections have their own posts to it.. and there is a "show all" button on each section which will take you to a page that will show all the posts or articles for its own section. when you click on that button and all the articles are listed ... it shows only 10 posts/articles, i want it to show 24 articles. Fourth: I want users on the site to allow to rate/vote only articles/posts only *5 Stars* for example see: [login to view URL] Fifth: I need a feature on the posts/articles and pages that has icons of where they can print, email, pdf Last: I want to have a section on the site(inserted in the sidebar (in tabs)) that will show visitors: Most Read | Most Rated | Most Commented | for example see: [login to view URL] work to be done on [login to view URL]