Nature Reviews Genetics article Molecular phylogenetics: principles and practice
Great general background on fluorescence microscopy: http://www.nature.com/nmeth/journal/v2/n12/full/nmeth817.html
Nikon’s MicroscopyU website, which is loaded with information on all aspects of scientific microscopy. Like, a lot of information.
A little background on the history and invention of fluorescent microscopes: http://www.nature.com/milestones/milelight/full/milelight04.html
A (very) short history of red fluorescent proteins, which were first isolated from anthozoan cnidarians: http://www.nature.com/milestones/milelight/full/milelight20.html