Data Structures for Assholes

One of John's many computer programing guides. It seems to focus on using a Sylladex and different Modi. It is insanely abusive, using every opportunity to demean and insult the reader, so much that it really teaches very little. In the back cover is a free Fetch Modus, the orange Queue Modus. John is currently reading it to learn how to weaponize his Sylladex.