Scheme as basically an implementation of the untyped lambda calculus will eternally be a good frame work to think about the problems of computation in. In the

Scheme as basically an implementation of the untyped lambda calculus will eternally be a good frame work to think about the problems of computation in. In the more practical area Racket (the most modern Scheme) has basically any practical functionality you would want, while amazingly remaining a platform for an incredible amount of experimentation in computation and programming language theory. But SICP is a book that is for people interested in the study of computation what programming languages can be. If you're worried about getting a job in software it won't be all that useful, but it will remain a classic for anyone interested in engaging in creating the future of software.