ARDrone

A good general starting point is the wikipage http://en.wikipedia.org/wiki/Parrot_AR.Drone

and the SDK forum https://projects.ardrone.org/

NETWORK and connection

• The Drone uses AD HOC networks http://en.wikipedia.org/wiki/Wireless_ad-hoc_network
• Here is how to connect to an ARDrone and to connect it to an Android device https://sites.google.com/site/androflight/How-to-connect
• Here is the how to build a usb connection cable to flash the firmware 

​EXAMPLES and interesting projects:

• DRONE tracking an object using bottom camera http://unrdots.leadhoster.com/ (refer also to TLD http://info.ee.surrey.ac.uk/Personal/Z.Kalal/)
• autonomous fly through labview: https://projects.ardrone.org/boards/1/topics/show/2963
• autonomous surveillance projects http://labe.felk.cvut.cz/~tkrajnik/ardrone/
• face tracking through opencv http://www.youtube.com/watch?v=VghVtljvWew&feature=related
• Video example of simple gesture Recognition & Color Tracking With AR Drone http://www.youtube.com/watch?v=naeZ58onPKM&feature=related
• Quadrucopter in Linz: http://www.aec.at/futurelab/en/referenzen/kategorie/kunst-am-bau/spaxels-klangwolken-quadrocopter/
• Tubingen university projects with Drones: http://www.ra.cs.uni-tuebingen.de/forschung/flyingRobots/welcome_e.html

other 

• Interesting resources for using opencv in gesture recognition and color tracking: www.andol.info (and in particular http://www.andol.info/hci/1661.htm)