I came across this site tonight....what a great site. The downloadable pdf books are so well thought out, I too would have been made up to have such a wealth of available to me 30 years ago. I am not an innovator and rely on learning from others all the time. Some individuals are destined to explain and teach and others write text books that are boring and far from interesting. In my opinion, if my interest is captured, then I learn. I ask questions.....no matter how basic or daft they my appear to others.....when answered by those willing to explain clearly.....then I have learned a little more......and will continue...as long as life permits. I owe the little knowledge I have to all those sharing theirs willingly. Thanks for the downloads.