This is a list of communities and resources that I have found that may be useful to a self build straw bale builder. Feel free to add any others via the comment section.
http://www.thepoosh.org/ In their own words “ThePOOSH.org is the unique hospitality site for virtually anyone, anywhere in the world wishing to participate in or start their own sustainable self-build project.”
http://www.woodnet.org.uk/woodlots/ A place to find sustainably grown and reclaimed timber
http://www.bath.ac.uk/research/case-studies/straw-scientifically-proven-building-material Interesting information from the University of Bath, leaders in researching the properties of straw as a building material.