Mash calculators:
http://www.rackers.org/calcs.shtml
Beer formulae:
http://en.wikipedia.org/wiki/Gravity_(beer)
Yeast pitching rate articles:
http://www.mrmalty.com/pitching.php
Creating larger starters:
http://www.northernbrewer.com/documentation/YeastPitchingRates.pdf
Tasting sheet:
http://www.ratebeer.com/documents/tastingsheet.pdf
Cereal Mash:
http://hopwild.com/2009/02/18/cereal-mashing-bother/
Lagers:
http://www.braukaiser.com/wiki/index.php?title=Fermenting_Lagers
Off-flavors:
http://www.kroc.org/Links/TroubleshootingGuide.htm
Formulary:
http://tophatbrewery.com/pics/Brewers%20Formulary%2024x36.jpg
Schwarzbier byo:
http://www.byo.com/stories/beer-styles/article/indices/11-beer-styles/1382-schwarzbier-style-profile
Brewing sours:
http://www.themadfermentationist.com/2009/11/brewing-sour-beer-at-home.html