Found this while studying up for casting. Ive read a few different books and articles but this one stood out to me. Few things in there helped my casting results. Worth the read, hope you enjoy.
http://www.lasc.us/Fryxell_Book_Contents.htm
http://www.lasc.us/Fryxell_Book_textonly2.pdf
http://www.lasc.us/Fryxell_Book_Contents.htm
http://www.lasc.us/Fryxell_Book_textonly2.pdf