One which is the best is Malcolm Knowles book 'The Adult Learner' bit heavy but has more than you'll ever need.Can you reccomend one for someone without a clue?
Another way is Scaffolding , here is an ebook which has a wealth of info;
http://projects.coe.uga.edu/epltt/index ... caffolding
I use my own book which is not in electronic format, which was designed over several years in the Air Force