Debian Resources - Debian-related forums, websites, howtos.
Local Groups - Debian communities in your city
Debian's birthday is August 16.
DebConf - The annual Debian Conference.
Sprints - Work meetings
Linux in general
Debian Edu uses Debian to make the best distribution for educational purposes
Debian Junior uses Debian to create an OS that children will enjoy using
Debian Lex is a complete system for all tasks in legal practice
Debian Live is a Debian distribution that you can try in a CD-rom or install in your hard disk or usb stick
Debian Med presents packages that are associated with medicine, pre-clinical research, and life sciences
Contribution and help to improve the project