The World Wide Web Consortium has a great deal of resources and guides for using html. The HTML Writers Guild is another excellent resource for html information. Look at their Frequently Asked Questions page or their WWW Development Resources page. If you want to maintain a consistent look across several pages, consider using cascading style sheets . You can read about them on the World Wide Web Consortium pages or the CSS Pointers Group .
Advanced users can use javascript to add a great many features to their sites.
Javascript allows you to define events which occur at certain times. For some ready-made scripts, look at Javascript Source . Altavista and some other search engines allow you to specifically search for images. When you are looking to spice up your site with new fonts, 3D text, and other graphics, take a look at MediaBuilder . This site has a number of animated images you can incorporate into your site.