I was diagnosed earlier this year at 40 years old. For me, the most valuable resources on late diagnosis aside from this community have been autistic YouTubers. In particular, these three:

• Autism from the Inside: He really breaks down things to simple terms that are easy to understand. Here’s his main late diagnosis video, though he has several, including one that is a conversation with another autistic person.

• Mom on the Spectrum: She was diagnosed at ~31. She shares her journey and what she has learned. I didn’t find a main late diagnosis video, but she has several that cover the topic. Additionally, many of her videos also cover matters on late diagnosis.

• Orion Kelly: I think he is quite intelligent. He seems like a strong advocate for autistic people. His videos have an especially assertive presentation. Here’s his late diagnosis video.

Also, our chat room is a great place to ask any questions that may come up, especially those that you don’t think merit an entire post or you don’t want recorded in your Lemmy history. While it is a room that anyone with the link can join, the Helpful Support/Venting room in particular is encrypted, so only users that have joined the room at the time can see the comments. You can also join with a name that’s different from your Lemmy account so that the two wouldn’t be easily linked. We often have discussions on experiences and difficulties, and I’m seriously surprised how many we have in common. We then discuss ideas on how to help improve the matter.

Edit: Also, welcome to the club!