Raising Children is an Australian-based parenting website, ad-free, and with expert-backed information. Their pages on children with disabilities have a lot of helpful articles/videos for getting to know all kinds of things about disabilities, a child's life with their disability and a teen's experience too.
Here is their Disabilities main page: https://raisingchildren.net.au/disability
Here is their homepage: https://raisingchildren.net.au/autism
They have lots of information on autism specifically as well.