BYO: Pick which beer you want to make from the dropdown menu and a list of yeast strains pops up.
Yeast Strain Comparison Chart: Compares yeast strains from Wyeast and WhiteLabs.
Wyeast Labs: Home Brewing Yeast Strain Guide: Offers yeast selections for ales, lambics, lagers, and belgian ales.
Yeast Calculator: Offers substitutions and the common styles of yeast.
White Labs Brewing Yeast Attenuation Ranges: A comparative yeast chart organized by attenuation range