Hi Alan. Welcome. And by "welcome" I mean "welcome home."
I'm 46 years old. I was diagnosed a few weeks ago. I'm a bit new to this, too.
I suspected my condition based on articles about peers in trade journals, and their diagnosis coupled with shared traits. I was in full-on denial ("No, I'm far too functional to be that!") I'd been having personal challenges, so I sought an Aspie specialist therapist. I knew if I wasn't, whatever I was was close enough that they'd be able to tell me where to go.
So I think that's my recommendation to you: find a qualified professional in your area and seek an evaluation/assessment.
Until then, check out the various forums here. I suspect you will find many more "Yep I do that", "Yep, do that too", and "Oh! So THAT's related to THIS condition?" in these sub-forums.
Good luck on your journey.