Here is some information from my friend who does this. I am sure she would be willing to talk to you if you want. Just PM me if so.....Good luck!
I am certified
through Delta. If you google Delta Society, you will find their home page.
Their main office is located in Washington State, but they have affiliates
all over the place. They have tons of information about how to get started
and what to do. They also offer a home study course if someone is unable to
take the actual class. I already had a certified therapy dog with another
group when I took the 2-day Delta class. I have to say I learned a lot in
the class. Being able to talk with the instructors about the material in
the manual was very helpful. Once the class is completed one needs to take
the test with the pet. Those evaluation dates are arranged with the people
doing the evaluating. I had three of my minis and my dog all evaluated on
the same day. They all passed! The certification is good for two years and
then we have to go through an evaluation all over again.