Here is a collection of links to Breech resources.

Spinning Babies
Preventing Breech and Posterior Positions

http://www.spinningbabies.com

A collection of breech techniques
As collected by a midwife

http://gentlebirth.org/Midwife/breechcl.html

More breech info

http://gentlebirth.org/Midwife/breechtn.html

Homepathy to help turn baby

http://www.midwiferytoday.com/articles/turnbaby.asp

Books

Breech Birth: Woman Wise by Maggie Banks