I would investigate:
(1) Buy a Roku. The "Roku 1" model is sufficient for most folks needs and is only $49
http://www.roku.com You can typically buy a Roku locally, at a Best buy or a Walmart, if you don't want to order online.
(2) Install "Plex Media Server" (free) on your PC.
http://www.plex.tv(3) Then go to places like these (and there are many others available):
(3a)
http://watchseries.lt/(3b)
http://www.solarmovie.so/(3c)
http://watchfreemovies.unblocked.co/(3d)
http://watch32.com/... and download movies, TV shows, etc. to your local PC. This is easiest to do using Firefox as your web browser with one of the many available "downloader" Firefox plugins. Personally, I like "Flash Video Downloader", which despite it's name, does much more than just Flash.
(4) Install the (free) Plex channel on your Roku.
(5) Stream those downloaded movies/shows from your PC running Plex Media Server to the Roku device hooked up to your TV.
Of course the Roku can stream stuff from NetFlix, Hulu, etc. directly, all by itself, without needing Plex Media Server. But there are things you can't get there that you may well find in the (3) websites above.
Once you get into Plex, you can learn more advanced stuff like having it transcode videos that are of wrong formats for your target device (the Roku), channels like "Let Me Watch This" and "IceFilms", etc. That comes a little later as you learn.
p.s. - I used to have a "Rabbit" years (decades?) ago to send stuff from downstairs to my upstairs TVs. That was a very old Rabbit, before they were wireless (I had to run a wire pair from downstairs to upstairs). It worked "OK" for what it was, and for the technology available at the time. I'm sure the new Rabbits are unrecognizeable from the old Rabbit I used to have.