Ask HN: Your favorite guide/learn-to

I really enjoyed Write Yourself a Scheme in 48 Hours (a Haskell tutorial): http://jonathan.tang.name/files/scheme_in_48/tutorial/overvi...

Maybe A FORTRAN Coloring Book http://www.seas.gwu.edu/~kaufman1/FortranColoringBook/Colori... (I can't be sure since I got my copy long after I'd learned FORTRAN and wasn't using it anymore, but it looked OK or better).

look up whytheluckystiff's ruby tut's, the sine qua non for some of "brilliant!" (and "huh?" for others