All three parts of a tuturial on FeynMF are available from CERN,
both as PostScript and HTML files:
http://wwwasdoc.web.cern.ch/wwwasdoc/WWW/feynmf.html
Local copies of part 1, part 2, and part 3
Local copies of part 1, part 2, and part 3
A paper has been printed by Computer Physics Communications:
T. Ohl, Comp. Phys. Comm. 90 (1995) 340-354
Preprint: arXiv:hep-ph/9505351 (local copy)