Fortran Installation

[Lou Umscheid]

I would like to install Fortran on newly installed Cygwin64 on my new LG 
laptop. I did this 9+ years ago for Cygwin32 on my Dell T1600 which is 
now fading. The process 9 years ago was long and hard over several weeks 
with many fallbacks and redo's. I am competent in Fortran programming 
but have only a minimum knowledge of Linux/Unix. Can anyone point me to 
a guide (I searched but could not find any) to installing Fortran, 
including which files to download, PATH, alias changes, etc. I know it 
is a lot to ask, but ANY help would be appreciated.

Lou