i often make links in Org Mode to files, which should open in emacs, but in another buffer than the one, which contains the link.
It would be the best, if they open in a buffer next to the one I work in.
How can i do that?
Please have a look at the variable
org-link-frame-setup. In its documentation string you'll find the searched for information.
You might do this with the keyboard sequence
C-h v and then typing above name.