5 year old daughter diagnose with Autism, whats next?

Hi, 

As a parent of 5 year old girl, i have just been informed she is autistic and to be honest i dont know what to do now? what happens next. I am emotionally really taken back and shocked by this because i did not think she met the criteria as first but now I cant help but feel guilty and worried about what the future holds. She is verbal and has developed extremely well at school and outside. Most of her struggles are though routine transitions or socially with others. I would for any guidance & support on what now?