Relevant sources about Phalaenopsis and orchids at large. I assume no liability for contents on the linked internet sites.

website of Alain Brochart
extensive picture galeryof Phalaenopsis specie and primary hybrids (english/french)

website of Bernard Lagrelle
detailes description and information about Phalaenopsis species (french)

website of Ralf Mummel
about the genus Phalaenopsis and allied genera (german)

Internet Orchid Species Photo Encyclopedia
extensive picture galery about various orchid genera (english)

Joe's Orchideenforum
The german orchid forum

Lotte & Thomas Orchideen
All about the propagation of orchids (german/english)