On balance, most people arrive mid-problem, so each write-up works on its own without the rest. In short, there is no order police here, but
Realistically, you do not need prior knowledge here — that is the whole point of the core ideas, and why regulars start there. The first
In short, the core ideas take a lunch break; everything else on this site assumes you have them. Most first-timers arrive mid-problem, so each primer