User Manual

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Finally, the staus will change to 'Done'.
The other message tells us that the sketch is using 928 bytes of the 32,256 bytes
available.After the 'Compiling Sketch..' stage you could get the following error
message:
It can mean that your board is not connected at all, or the drivers have not been
installed (if necessary) or that the wrong serial port is selected.
If you encounter this, go back to Lesson 0 and check your installation.
Once the upload has completed, the board should restart and start blinking.
Open the code
Note that a huge part of this sketch is composed of comments. These are not actual
program instructions; rather, they just explain how the program works. They are
there for your benefit.
Everything between /* and */ at the top of the sketch is a block comment; it explains
what the sketch is for.