PiCam
connecting the camera
gently lift the black clip by pushing upward. insert the ribbon cable of the camera firmly down. the blue side goes towards the headphone jack! push the clip down again.
See: 
setup
warning: this info is in progress -- may not (yet) represent a useful thing
- ok this link in the end was totally misleading -- in fact you (maybe?) just need to add some stuff to /boot/config.txt
(the audio thing is unrelated to the camera, but may be useful -- I think it forces audio to the mini jack?! ie not to HDMI)
/boot/config.txt
# Enable audio (loads snd_bcm2835) dtparam=audio=on start_x=1 gpu_mem=128
test the camera
raspistill -o test.jpg