After long time I'm back again. The good news is that I've started writing in Fortran the challenges from Daily Programmer Reddit channel: http://www.reddit.com/r/dailyprogrammer. It's a good source of problems to write in Fortran and show you how Fortran works by examples.
I'll try to sticky the challenges with Fortran 77 and made them compatible with g95 and gfortran also.
In the meantime, I'm going to write them in Perl, Python, Haskell and LISP to teach myself these languages.
Next post will be the easy challenge #1, after that, the intermediate challenge #1, the hard #1, easy #2 and go on.