This is my personal list and must not be associated with the BOS. It is based on the quality of the books and their availability.

There are several books available that contain instructions for models suitable for

beginners

	"Teach yourself origami" by Robert Harbin published by Hodder & Stoughton ISBN 0-340-56527. This book also has a section on the history of origami. Incidentally, Robert Harbin was a founding father of the BOS.
	"The New Origami" by Steve & Megumi Biddle published by Ebury Press ISBN 0- 09-177667-8
	"Step-by-step Origami" by Paul Jackson published by Acropolis Books ISBN 1- 873762-60-7
	"Origami, A Complete Step-by-step Guide", by Paul Jackson, published by Chancellor Press, ISBN 1-85152-748-6
Any of Paul Jackson's origami books should be good. Beginners may initially have to confine their choice of models to those presented at the beginning of the books as the models become more complicated as one proceeds through each book. As experience is gained then the whole of the book is used.
	"Origami, paper projects to delight and amaze", by David Petty, published by D & S Books, ISBN 1-903327-08-3.
	"Creative Origami" by Kunihiko Kasahara original edition published by Pitman ISBN 0 273 31 513 7 or "Origami Omnibus" by Kunihiko Kasahara, Japan Publications ISBN 0-87040-699-x.
More experienced folders
	More experienced folders will appreciate "Brilliant Origami", by Dave Brill, published by Japan Publications, ISBN 0-87040-896-8.
Complex
	Complex models can be found in "Origami Sea Life", published by Dover, ISBN 0-486- 26765-2, authors John Montroll & Robert Lang
	or "Origami for the Enthusiast" published by Dover, ISBN 0-486-23799-0, author John Montroll
	or "Animal Origami for the Enthusiast", published by Dover, ISBN 0-486-24792-9, author John Montroll
	or "Origami Insects" published by Dover. ISBN 0-486-28602-9, author Robert Lang
	or "Origami Sculptures" published by Dover, ISBN 0-486-26587-0, author John Montroll
In addition you might like to seek inspiration
	For inspiration look at "The Encyclopaedia of Origami and Papercraft Techniques" published by Headline, ISBN 0-7472-0416-0, author Paul Jackson. This last mentioned book has no folding instructions only colour photographs.
	The BOS publishes a series of booklets which are inexpensive and contain many good models. These are obtainable only from the BOS.
Modular work can be found in the following books :
Books completely devoted to modular work
	Any book by Tomoko Fuse. For example: Unit Origami, Chukuma ISBN 4-480-04078-1 [Japanese text] or Multi-dimensional Transformations. Japan Publications Inc. ISBN 0-87040-852-6 [English text]. If you know the international diagramming convention then the text language is unimportant.
	Mathematical Origami by David Mitchell, Tarquin Publications ISBN 1-899618-18-X
	Origami Wreaths & Rings by David Petty, Zenagraf ISBN 0-9627254-1-2
	Paper Crystals by David Mitchell, Watertrade publications ISBN 0 9534774 2 8
Good section of modular work with other sections
	Brilliant Origami by Dave Brill, Japan Publications Inc. ISBN 0-087040-896-8 [English text] see earlier comment .
	BOS booklets :
	Modular Construction and Other Twists by David Petty, BOS Publications.
	Origami by Jeff Beynon, BOS Publications
	More 'igami by Jeff Beynon, BOS Publications
	Jeff-ori' by Jeff Beynon, BOS Publications
	Multiplication by Jeff Beynon, BOS Publications
Teachers
	The best all round book giving background information as well as models and related activities is "Complete Origami" by Eric Kenneway original edition Ebury Press, ISBN 0-85223-617-4. This is also known as "ABC of Origami" and is supplied by the BOS in their booklet series. Highly recommended for anyone with an interest in origami.
	My favourite Japanese book is "A Taste of Origami" by Yoshihide Momotani in Natsume Art Library series. Issued 1981, publishers number 0376-26102-5619 The basis was apparently a course in origami. There always seems to be something else in the book that I overlooked earlier. Level is beginner to complex.