Well can you summarize some recommendations? I looked at the website, and didn't see any. Don't have the books at this time.

I can imagine that he gets angry as he sees what other kids can do that he cannot. If that's the issue, it's an adjustment he'll have to make in life -- the truth cannot be hidden from him forever, and he cannot work as effectively to fill the gap if he does not know it exists. If that's not the issue, what would the issue be? Autistic people are usually gentle, and in my experience their tantrums are simply tantrums, to which they may be (much) more prone than the nonautistic population.