Also, avoid animated gifs that loop forever. The more animation on a page the more likely your are to overpower the browser and distract the viewer from the page's real content. Using other sorts of animation often requires plug-ins by the viewer, which can limit your audience, and are probably best left until you have a lot more experience. Try to use proper grammar and syntax. Avoid linking to documents that don't exist, and take a little time every so often to check that the links are still going to somewhere once your site is up and running.
Web sites do move about.
Don't copy images from other sites without their permission first. It is only courtesy to ask and it can avoid legal problems. That's another reason for having an e-mail address on pages. It is always better to tell your viewers where they are going to, as with the link below.