Simply... I want to know how to use my WordPress theme main page (homepage) as every page in the site. So when you clock a link in the nav menu to go to another site page, it is exactly the same as the homepage but with different content. I also want sliders on every page with different images. If anyone can help me resolve this issue I would greatly appreciate it.
Can you provide a link to your site? What theme are you using? A Wordpress theme generally styles all pages and posts.
(I don't know if i understood your question very well.) You can create a custom page template to be used for hompage (http://codex.wordpress.org/Pages) , create a new page and assign to it the created template from right sidebar select list. Go to Settings->Reading and you will see Front page display: Your latest posts or A static page . Check option : "A static page" and choose your new created page (with your new template) and save. This depends how you want to insert the content for slider. You can use your posts thumbnails and content as slides or you can manually insert from an options page each image and caption.