A:AnswerYou need to have an HDM1 port available for Roku so I doubt your old "tube" tv will work. You can get a cheap TV for less than $150 that will work.
A:AnswerNo you do not. There are many free apps to choose from and roku provides an app with some decent movies and tv shows for free..
You will if you want to order netflix, hulu, etc. But usually that is done thru your laptop or phone, etc. Easy to use with easy instructions.
A:AnswerYou definitely need some type of WiFi when setting up Roku or fire stick and I know because I have both and since I have Xfinity I did both quick using my WiFi thru Xfinity.