Check out this treatese on zombie physiology.
Here is a bibliography of training zombie sources.
And this is info on RoMERO type zombie hunting group from the Ye Olde Dayf, pre-FLATULENT. ( Ghoul Elimination Organization. Rapid Multi-Eradication Recon Ops, of which I am affiliated, and the precursor to that organizatio: Former-Living Anomaly Targeting Unit, Law Enforcement Nexus Team.)
Oh Noes! The ZOMBOCALYPSE!apparel items and Zombie garden gnomes.