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