The PDF files are step-by-step mini-books, averaging
about 40-45 pages each, that detail the subject material
in a clear and easy narrative.
Lots of beautiful images also illustrate the different
concepts being explained. Simple, clear, and
The two free files can be downloaded automatically -
while the $4 PDF's take you to a Storefront Page for
payment, then easy downloading. Just e-mail me if you
have any problems.