AngstromFeeds
A 'feed' is a place where you can download additional software for the Angstrom distribution. You can browse the available packages for Angstrom through a nice web interface:
The feeds are organized by categories, allowing to quickly find the software you need. By clicking on a package name, you can view a brief description and the lists of dependencies. But don't worry about dependencies because the Angstrom package manager will automatically install the required packages for any software you will install.
Installing software
TODO: Info on how to install a software on Angstrom
Configuring feeds
You can configure additional feeds. A nice howto is this one