Structure And Interpretation Of Computer Programs -

: Moves down to a lower level, describing how high-level languages are implemented on hardware-like register machines, covering compilation and memory management.

: Introduces the fundamental elements of programming, including expressions, naming, and the "substitution model" for evaluating procedures. It explores recursion and higher-order procedures (functions that take other functions as arguments). Structure and Interpretation of Computer Programs

: Teaches how to design new programming languages to solve specific problems. This includes building a "meta-circular evaluator"—an interpreter for a language written in that same language. : Moves down to a lower level, describing