Downloading Fortran Compiler

Don't have the knowledge, time, or understanding to figure out how a free compiler works so I downloaded Simply Fortran.

I can get the basic "hello world" program to run, but I still can't my own code to work because I don't understand squat about fortran or where files need to be or how to set up new projects.
I've used Netbeans before for java and I assume this is similar but I cannot figure out for the life of me how it works.

EDIT:

I am trying to compile

Code:

PROGRAM SIMPLE
      A=10.
      B=20.
      C=A+B
      PRINT *,”A=”,A,”,  B=”,B,”, C=”,C
      END

Attempting to build gives

Code:

PRINT *,\x94A=\x94,A,\x94,  B=\x94,B,\x94, C=\x94,C
              1
Error: Expected expression in PRINT statement at (1)
Error(E42): Last command making (build\simple.o) returned a bad status
Error(E02): Make execution terminated

no idea what's going on