Push the LED leads into the breadboard, with the longer (positive) lead towards the top of the breadboard. It does not matter which way around the resistor goes.
The top two connections on the BBB expansion header we are using (P8) are both GND. The other lead is connected to pin 10, which is the right-hand connector on the fifth row down. The pins are numbered left to right, 1, 2 then on the next row down 3,4 etc.
not working on my beaglebone black wireless ??