Late daignosed peeps, What ACTUAL advice would you give to genuine people looking for/about to get tested for autism?

Now I'm daignosed...but ohh i WISH I had someone to guide me and actually help me back when I was still suspecting, miserable, harmonal teen that wasn't all this online self dx bs. I would love if people could give advice for ppl looking into testing so ppl aren't like how I was back then :')