Download and install Basic TeX package from here.
Set System Path
The package will be installed at
/Library/TeX/texbin/, so it
must be added to your PATH like so:
which latex to ensure that the path has been set correctly.
You’re not ready yet. There are a few more packages that need to be installed in order to render the pdf from the tex file. Install them like so:
sudo tlmgr install wrapfig sudo tlmgr install marvosym sudo tlmgr install wasysym
You should now be able to export to pdf using
C-c C-e l p.