Late Autism and ADHD Diagnosis - No idea what to do next

I recently (in the last 5 days) got diagnosed with ADHD and Autism. I'm 38m, live in the UK, and have absolutely no idea what to do next. I have to wait a few weeks until I get the report to give to my GP. I can then get access to appointments and treatment. But I have no idea what to ask for. I have read a lot on the topic in the last few weeks, but all the advice in the UK is conflicting, and I just have no clue on how to start. Has anybody else had the same issues?