How install an Emacs package from file

Question

I have Emacs installed on an internal PC in the organization that is not open to the Internet.

For the sake of that question I'd like to install the "auto-complete" package.

I have downloaded a tar file from MELPA and a zip file from GitHub and copied them to my organization PC.

Now how can I install the auto-complete package using either the tar or zip file?

By the way I see in MELPA that the auto-complete package depends on the pop-up 0.5.0 package.

Should I install that before?

Answer 1

See C-h f package-install-file

And yes, you will need to manually install any dependencies first, if Emacs will not be able to fetch them on its own.