Ok I have tv in the living room with built in WiFi so I was able to connect it my internet quite easily. How do I connect the tv in my bedroom to internet that does not have built in WiFi. I've heard about tv box, roku ect. I'm lacking knowledge with New technology. Please help! Thanks.
Since your bedroom TV isn't "smart" like your living room one you will need to get a media streamer to make it smart.
There are different kinds (android TV, Apple TV, Roku, & Firestick).
The simplest one with the greatest access is the Roku. They have different models so you can get one for any TV.
Android TV boxes are more open ended but a bit more involved so it depends on what provider you want to use for your content.
If you are an Applecentric then the Apple TV is the one for you.
You can find comparisons and reviews on this site.