There are some books for self-help groups of adults with 'hf' ASDs. They're easy to understand and answer basic questions. I think the ones I've seen up to now are from TEEACH.
I don't think they have comic books, but the text in them is descriptive and direct. I do think some of it requires someone who understands social skills too, though some sheets give good explanations that do not require such.
Since it's only a translation form English to German I've no idea where to get these things though!
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Autism + ADHD
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The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it. Terry Pratchett