Hey don't worry, no one should be bothering you for your age or experience with new technology, that's just mean. I'm sorry you feel that way, BUT I can definitely suggest and recommend ways to go about this.
You have different streaming options from some companies that have certain shows and whatnot available. Research Netflix, Hulu, HBO Now, and Sling television. This tv fortunately has Roku built in that helps with already having most of these services available on your home screen. If they aren't listed there, then just make your way over to the left of the screen and select streaming channels to access the content.
Good luck! I hope this helps! Oh and before I forget, please make sure you have a strong wifi connection on the tv by making sure your wifi router is at least within 20 feet of the tv.