Reddit mentions of Modern Fortran in Practice

That's actually a very good idea. You really can't go wrong going that route.

In addition to the book you mentioned above, here's another recent book on Fortran that is very good: http://www.amazon.com/gp/product/1107603471/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

I learned fortran using these two books

• FORTRAN 77 for Engineers and Scientists with an Introduction to FORTRAN 90
  
  
• Introduction to FORTRAN 90
  
  Since then I've used the following books as well
  
  
• Modern Fortran: Style and Usage
  
  
• Modern Fortran Explained (Numerical Mathematics and Scientific Computation)
  
  
• Modern Fortran in Practice
  
  I don't have any preference for one over the other, except the first two which were good for learning the basics and the quirks to fortran programming (at a national lab you'll likely be reading legacy code that's written in fortran 77 and things like do-loops are very different from fortran 90 onward).
  
  For example, a do-loop in 77 looks like (the spaces at the beginning of each line are important):
  
  >(6 spaces)DO 70 ICNT=1,XXX
  >
  >(6 spaces) statement1
  >
  >(6 spaces) statement2
  >
  >(6 spaces) ...
  >
  >70 CONTINUE
  
  Whereas in 90 onward:
  
  >do icnt=0,xxx
  >
  >
  > statement1
  >
  > statement2
  >
  > ...
  >
  >end do