I am thinking of studying buddhism, is buddhism compatible with autism?
I think it's worth taking time to think about why you're interested.
Buddhism is not really a religion, nor is it a philosophy.
It's a path to enlightenment, self discovery and the realisation that the nature of reality is non-dual (there is not me in my head, and all that stuff out there (dualism), there is just one thing manifesting as many). Nothing in all of that relies on belief, only your own experience (that's the part that attracted me).
The Buddha once said that only your own experience can be trusted, even if it contradicts what he himself taught.
Buddha simply means "awakened one". Some one who has become fully awake and aware of their self and their true nature.
If you want to get into the tradition and practice go for it - I'd choose Zen in that case.
If you're after enlightenment there are much shorter paths.
I got into it because I was after enlightenment, and while it's great it is mired in tradition and spiritual practice, and I moved on quickly.
You can get to the same place with Advaita Vedanta, Self Enquiry, Direct Path Enlightenment, and many other ways.
It's probably true that all religions lead to the same thing, and most religions are built around people who woke up, and tried to help others wake up.
Instead people worshipped them!
Regarding meditation; too many people try to hard.
"The essence of meditation is simply to be in the present, neither pushing anything away, nor pulling anything towards you" Adyashanti (paraphrased)
I meditate while washing the dishes, and tidying up.