Forget SICP

http://www.amazon.com/Peter-Nortons-Complete-Guide-6-22/dp/067230614X/ref=pd_cp_b_2

This is much better. After all, i bet more people uses DOS 6.22 that LISP!!!!!

A lot of point-of-sale terminals still run DOS. Maintaining their shit is actually a well-paying job. They have lots of problems with their old dot-matrix receipt printers dying and IBM keeps trying to sell them a whole new setup and a support contract for trillions of dollars.