One source of information is found via SlideShare, through which published, printed information is made available. Dacian Busecan shared his methods to motivate your pigeons here http://www.slideshare.net/dacianus/racing-pigeons-the-racing-systems.
You will find his publications on Amazon at http://www.amazon.com/Dacian-Busecan/e/B00HJ7UL88.
There are countless sources of instructional materials. Another example is the Widowhood brochure that is part of the AU's six-pack of brochures. Those brochures are found at http://www.pigeon.org/promostore.htm.