I'm a newbie and i need to help

Hi all
I am completely new to UE. I’m always fascinated by photorealistic cinematics and I want to get my hands on this aswell.
Therefore I am looking for some real basic tutorials. Is there a special creator or series you could recommend for getting me started?
Also, do I need to spend money on assets etc. in order to create something good looking or is this also possible with freeware?
I am really thankful for any advice!