Lot's o' force field tutorial links
Great ways to get rapidly up to speed
charmm:http://www.charmmtutorial.org
http://mmtsb.org/workshops/mmtsb-ctbp_2006/Tutorials/WorkshopTutorials_2006.htm
http://mmtsb.org/workshops/mmtsb-ctbp_workshop_2009/Tutorials/WorkshopTutorials_2009.html
gromacs
http://www3.mpibpc.mpg.de/groups/de_groot/compbio1