I don't have anything, this would just be helpful for me too (hope that's okay)

Look up different types of ocd and see if they relate to you, it helps to know others go through it too. Also I like the youtube channel “OCD and Anxiety”.

I have OCD and it's changed a lot over the years. I've had different types of it through different points in my life. My past therapists gave me workbooks on it, but I don't remember the names of them.

Autism and Anxiety have a lot of shared and similar symptoms as OCD but they also are comorbidities so it wouldnt hurt to look. I would suggest to start looking at venn diagrams and similar resources of both shared and separate symptoms of all three, I have a venn diagram saved on my phone but I can't add pictures in this app so the best I have to offer is suggesting you Google it lol