tags and categories on pages

Hi again :-) I have a few questions concerning tags and categories on PAGES. 1) Is there a way to use tags and categories on a Page (without using a plugin)? 2) What is the easiest method to change the layout of the Result Pages of the different tags and categories? (I don't like it now, especially the white bar with the title) 3) How to add text to those pages? 4) What is the CSS code to get rid of date and author? Thanks in advance. BR calmo16