[Tom Swaman]

Fwimbw, I think you are all partially correct. What I suggest is that this subject needs to be broken down into two subjects, namely Understanding and Using Histograms and Guidelines for Using Histograms to Improve Your Exposure. The former topic is technical first and applications second. The latter topic is practical/applications oriented with simple-to-follow guidelines. If this separation is made for different types of photographers/ photographic interest folks, then the information becomes much more practicable IMHO.

Tom