With a little luck, one day you will be able to log onto E2 and become an instant FORTRAN god/goddess. Not anytime soon, perhaps, but here's what's around so far:

Nodes with info on FORTRAN (both history and fan letters):

Fortran (you are here)
FORTRAN I
Fortran 66
Fortran 90
Fortran 0x
High Performance Fortran
MIA Fortran
Why FORTRAN is our Friend

How Not to Code:
kangaroo code
spaghetti code

Language/Command Reference Nodes:

COMMMON block
CONJG(x)
GOTO (Fortran-specific syntax not yet covered)
(more upcoming)
Compilers:
g77
f77
Miscellaneous:
Hello World has a FORTRAN version included.
This project motivated by a summer job that involves sorting through and modifying nuclear physics FORTRAN 77 code older than I am. /msg me or softlink anything that ought to be added.

My all-time favorite FORTRAN reference book is Fortran 77 for humans (West Publishing Company, 1980). Despite all mentions of punch cards, it taught me almost all that I know, including how to censor text containing the words "durn" and "heck."