October 28, 2009 — This video gives you a brief introduction and how-to for the Image Widget, available on all WordPress.com accounts.

A WordPress.com Support page detailing the widget is also available here.

October 3, 2009 — The RSS Links Widget allows you to easily add links to your blog’s post and comment RSS feeds in your sidebar. This will provide your readers with a quick way to obtain your blog feed URLs and subscribe to them as they wish (via a web browser or RSS reader, like Google Reader).

This quick tutorial will show you how to set it up and use it.

You can also view the Support page for this Widget.