You should have all of these files before you start work on Turkish

   README
   doc/
       TUGpap.tex turkish-hyphens.tex
   hyphen/
       turk_hyf.c
   inputs/
       hyphen.tex sample.tex tkccode.tex tplain.tex
   mf/
       README accsub.mf aynhmz.mf tkaccl.mf tkaccu.mf tkacil.mf tkdotl.mf
       tkdotu.mf tkdtil.mf tkital.mf tklig.mf tkpnct.mf tkroml.mf tksub.mf
       turkce.mf turkit.mf wtkr10.mf wtkti10.mf
   misc/
       wtkr10.pl wtkti10.pl