http://hydropower.inel.gov/techtransfer/pdfs/ido-10107-vol.1-pt1.pdf

This is a great resource for beginners.  I am posting it as a link because my contrary old computer refuses to download this and upload this file to the "files" section.  If anyone else has time, the inclination and the ability to do that I think it would be a good addition.  If you think you might need it later, just save the link.

This handbook tells you what measurements you will need and how to accurately obtain them.  It tells the neophyte what to look at and what to look for and describes terms and gives formulas.  It isn't an infringement on protected material, as it was meant to be distributed as a free resource.

Sue Kaveny