Ebook
Complete Origami Course
Defining all basic terms and procedures that will be used throughout the book from the very beginning, it is recommended for beginners and for anyone who has already some background in Origami. It is very detailed, choosing a set of symbols (solid arrows, hollow arrows, dotted lines, dashed lines, looped arrows and so on) so that once you learn it, everything else gets easier.
(http://rapidshare.com/files/152598049/The_Complete_Origami_Course.rar )