Websites:
http://bootlegbiology.com/diy/capturing-yeast/
http://www.themadfermentationist.com/2011/04/ambient-spontaneous-yeast-starters.html
http://jesterkingbrewery.com/head-brewer-garrett-crowell-on-curating-native-yeast
https://farmhousebeerblog.wordpress.com/
http://www.alesoftheriverwards.com/2016/01/harvesting-and-re-pitching-slurry.html
http://www.milkthefunk.com/wiki/
http://brewingreality.blogspot.co.uk/ especially the flavour compounds of the week
Great Brettanomyces Facebook group
Books:
Tonsmeire, Michael. American Sour Beers: Brewers Publications, 2014
Sparrow, Jeff. Wild Brews: Brewers Publications, 2005
Buhner, Stephen H. Sacred and Healing Herbal Beers: Brewers Association, 1998
Ferguson, Euan. Craft Brew, 2016
Hamilton, Andy. Brewing Britain, 2015