"I am finally a specialist in something"
How I did it: I started working in the field of alcohol and drug treatment which required I become registered. It led me to W. H. Mead training academy where i took a year of classes for the test. I then signed up for a RAS with the Breining institute. They set everything up and made it easy to take the test. Test was a little tricky but i passed and am now all set to go.
Lessons & tips: Study. There is a lot of info on that test that you need to know.
Also it helps if you have experiance working in the field.
Resources: W. R. Mead Training Academy
And McAlister Institute (where I got all my work exp)