This screencast reviews verbs and demonstrates how to replace weak verbs with stronger ones.
Source: Kathryn Reilly
http://www.uncg.edu/eng/writingcenter/handouts/STRONG_AND_WEAK_VERBS.pdf
http://home.comcast.net/~tgeorges/write/les12.htm
http://www.davis.k12.ut.us/25842082091857287/lib/25842082091857287/English%2012/WWML_Strong_vs_Weak_Verbs.pdf
Source: see above