Some more links about other sites which could be of interest to you:
Diving education in the 21st century
The online logbook system where you share your dives with your buddies, comment and stamp them - all online!
This is a Content Management System (CMS) for web sites for instructors and diving schools
an eLearning management (LMS) and knowledge distribtution system (KDS). We use this system for our online courses.
our corporate web site with all our services - including but not limited to the diving industry
Professional books and teaching aids for diving professionals