I really don't know much HTML. I'm trying to put and image, just a plain old image on my sidebar at http://www.thedvdbuff.com and I can't figure it out. Would it be easier to get a plugin? It's just one image.
Upload an image into the images folder of your server. In your WP dashboard add a new text widget to the side bar and place the following code into the new text widget: Good luck...
cormac is right but for your immediate knowledge on HTML there are HTML Examples in my blog "cascading style sheets" it is in my signature.. there are a lot of hands-on examples there on how to use HTML to your site. Hope this will help you..