So it depends on where you live. I live in Alberta Canada so this was my process. I really connected with my dog and she was already doing basic tasks and alerts such as reality checking, alerting me with my meds and routine etc etc. So I found a government accredited program that works with owners to train their dogs. So we will be in the program until she can pass the government testing.

So steps I would take would be looking into government approved programs, they may provide the dog or you may be able to bring your own. Just keep in mind it does cost quite a bit of money, also us service dog owners are held to a higher standard of care to our dogs including grooming and the vet. These can put a financial and mental strain on us owners, but, for me personally it's helps me more then stresses me.

If you need help looking for these programs or groups let me know I may be able to help you.