Appendix A collects all the Sonic Pi articles written for the MagPi magazine.
These articles aren’t meant to be read in any strict order and contain a lot of cross-over material from the tutorial itself. Rather than try and teach you all of Sonic Pi, they instead each focus on a specific aspect of Sonic Pi and cover it in a fun and accessible way.
You can see them in their glorious professionally typeset form in the free PDF downloads of The MagPi here: https://www.raspberrypi.org/magpi/
If you don’t see a topic that interests you covered in these articles - why not suggest one? The easiest way to do that is to tweet your suggestion to @Sonic_Pi. You never know - your suggestion might be the subject of the next article!