- Crash Course on Notation in Programming Language Theory (Jeremy Siek) – shows notation for sets, tuples, relations; operational semantics; type systems
- Game Programming Patterns by Robert Nystrom
- Yin Zhen white tea (obtained from Tea & Coffee Shop)
- “Time Traveller” by O-Five, Vancouver. Very nice black tea made from “ancient tree” leaves usually used for Pu-Erh, from Lincang, Yunnan.