Support after diagnosis

Evening all

So I got diagnosed finally last year at the age of 42. And well basically thats it.. No more information other than the diagnosis. 

I just don't know where I go from here. I'm very reclusive, and that suits me just fine, but I have no support or understanding from my family. Its more of a 'well everyones autistic' or ' we all have funny ways'. So its really hard for me to understand what austism means for me and how I should be.

I do have an autistic son and I believe my daughter has it too. I understand how they both are and have always advocated for them. 

I'm starting a new job soon and I dont want to mess it up because of how I am. Any advice would be great