The sample code for accessing the beaglebone's hardware
Print hello arm on the serial
Binary clock on the 4 leds of the beagle
Read and write to the MMC
Sample "C" program to print to the UART
Idealy I would like to merge this code with the turorial found here http://www.bravegnu.org/gnu-eprog/ to have a nice little standalone turorial for developing arm using the the beaglebone as example.
You can also have a look at