HTDP starts off pretty basic, but it's by the same people as SICP (a famous textbook), and if it's anything like that book, it's "surprisingly deep", so don't d

HTDP starts off pretty basic, but it's by the same people as SICP (a famous textbook), and if it's anything like that book, it's "surprisingly deep", so don't dismiss it too quickly as "too easy"...