A nice little guide for coping with executive dysfunction, pathological demand avoidance, going out, and working for autistic adults. I found the art and tone a bit patronizing but that's a personal preference thing and I don't think it's malicious at all.
A network run by and for autistic people that advocates for autistic rights.
Professional/Verifiable Self Test
A resource site made for and by autistic people which includes a bunch of autism tests. Not only that, but these tests are rated for respectfulness, clarity, and accuracy, along with stating what level the results have to be at to be considered significant. If you're going to take these autism tests anywhere, I'd recommend doing it here.
Don't know how fully reliable all of their videos are, but the meditations and soundscapes are really helpful.