Well. Didn't quite make the led blink yesterday. But this morning, just between breakfast and going to work, a led was blinkend.
Ok, I just followed the 'get started' and uploaded something I didn't make myself, but it's a start.
There was an issue in the Makefile of the led blinker. There's a command 'stty -F [blahblah]', which should be 'make -f [blahblah]': Lowercase f. In one place it's wrong, in the other it's correct.
Oh wait, I see now. The makefile is probably ok, it's probably 'make -F' on Linux. But in the Guide, the command for Mac OSX is given as:
make SERIAL=/dev/cu.usbmodem1421 upload-linux
While it should be:
make SERIAL=/dev/cu.usbmodem1421 upload-mac