I wouldn't be surprised if some online tests could give good indication of whether you have the condition. You might find some autistic people are rather protective of their diagnosis after it became almost trendy to talk about mental health etc.. in the past few years.
I've seen people with autism do standup comedy.
Re: your spellchecker question, the forum has one built in, I've just logged in using firefox and the word "pritty" above is underlined in red.
Must be a FF thing, nothing on Chrome unless I quote.