Timberdoodle Co tries to provide as many samples and links to free samples as possible. We know that all autistic children are unique and therefore what works with one may not with another. Some freebies require a purchase (to cover shipping). Other items are available as free downloads. Please contact us with any questions.

http://www.mariposaschool.org/programs/TrainingManual.pdf
This massive, 136 page manual covers the basics of VBA in a practical and helpful manner. This is a wonderful free resource!

http://www.users.qwest.net/
Yes, this document is replete with typos, however it is a relatively short (38 pages) manual on the nitty-gritty details of how to teach pivotal behaviors to children with autism. One of the most helpful links we have found for getting started, it is extremely readable and easy to understand.