A:Answer It connects via wifi and streams content over your internet connection into an HDMI port on your TV. What you get depends on the content provider. Netflix and Hulu are best known paid providers of movies and tv series (old and recent... usually minimum of a few days after broadcast). NFL, MLB also sell subscriptions. Many other providers (religious channels, technical blogs, etc) are free. Some are good and some are junk. If you retain your cable subscription you should be able to stream almost any content provider that is on your cable plan (though that sort of negates the value of the Fire Stick). There are also a few aggregators that provide cable-like bundles of content (Sling TV has ESPN, CNN, Disney, etc.; SkyAngel has Christian/family-oriented content like Hallmark, Disney, etc.)
While the voice search is interesting, the Fire Stick always pushes the Amazon (pay per view) content first and makes you work to find other providers of content. I also have an older Roku box and find its interface more like a cable set-top box. The Roku's non-biased cross-provider search makes it easier to find the free content I want than the Fire Stick, despite the latter's technological advances.