Movie information and trailers etc


I’m a newbie with OSMC and Kodi and i’m having trouble getting movie information, thumbnails and trailers and such on my movies.
I have an external hard rive with a top folder named Movies which contains movie folders and files with naming in various formats.
I got the universal movie scraper add on enabled.
How do I go about get this working.
Sorry if this already in here, I just could’t find this issue.