Check out some of the example apps that are available:
A simple app that takes a remote resource containing some metadata and displays it to the user so they can easily download and play new torrents. Note that you can check out a tutorial on how to actually build this app yourself at Media Downloader Tutorial.
Normally, apps are sandboxed so that they can only see the torrents they’ve added. This example shows how to elevate your app’s permissions so that it can see all the torrents a user is downloading. There is a tutorial for this app as well that you can see at Permissions Tutorial.
µTorrent users are all over the world. To make your app readable in as many languages as possible, take a look at this example. For a tutorial on exactly how to build this app, check out Internationalization Tutorial.
Not only can apps add torrents to the µTorrent client, they can also add RSS Feeds. This example shows how to add an RSS Feed to the client and then use that feed to display a user friendly list of what’s going on. For a tutorial, check out RSS Feeds Tutorial.
A polished, fully featured version of the media downloader tutorial. Take a look if you’d like to see how to do some more advanced things once you’ve finished the media downloader tutorial.
This example is a search UI app for ClearBits torrents. It parses XML results against an HTML view template. The tutorial covers creating a DOM-based view template, property-based progress bars, cross-origin resource sharing, and more.