I want to use same documents in multiple/different courses. Is there a possibility
to manage this. F.e. I would change a PDF on one place and it should be
changed in all my couses I use it.
One of the things I've done (don't know if it's the best) is I've added the resource or file to one course and then provided a link to it from the other courses. This has allowed me to update the root and as long as I don't move the root the links take you to the updated version.
Don't know if this is what you're looking for though.
Or you could try a meta course that takes enrolements from the related courses to keep the files in.
Thank you so much everyone for the quick responses on this. I'm glad you've all shared your experiences with the linked files. I was just starting to do this with our site and it hasn't affected us because all of our students enroll in all of the courses (it's a business environment where the Moodle is used as a sharing tool)
I'll definitely keep all of this in mind as I continue building.