>>20
Math up to calculus will be fine for SICP; just about everything else that's needed will be explained within the book.
Also, I don't think there's many autistic people here. Lonely young men, who have a hard time relating to their peers, but not autistic. Autistic people are very varied, but they aren't usually the type to spend their days socializing with other people in such complex ways as the weird-ass depersonalizing stage play that is /prog/.
Yes, some may call me an ``autist'' for bothering to say this, but no, really.