Comment by emmanueloga_

On a related subject, two good resources to learn how to write interpreters are [1] and [2]. The nice thing about approaching programming language implementation with Scheme is that the whole parsing subject is unneeded (the interpreters work by manipulating S-expressions directly), or can at least be delayed until later.

1: http://cs.brown.edu/courses/cs173/2012/ 2: http://www.eopl3.com/