Does anyone know if it is possible to take one category and display it on a page in Wordpress. For example if I have a category named pickles, is there a way to display the posts in that category and that category only on the home page?
Yes, but you'd need to edit the index.php file to include something like <?php if ( in_category( 'categoryName,' )) { ?> inside the loop at the start and <?php } ?> just before the end of the loop. Here a reference to the in_category function: http://codex.wordpress.org/Function_Reference/in_category
i think much more easy ...... create a page and redirect to the category then set the page as main page i think this should work ...