The first step is the application. Then, there is the skills assessment test, which is difficult if you are stressed and unfocused. Then, there is the medical evaluation, the polygraph, and the interview. Honestly, I had so many variations, so don't listen to me.

Common sense scenario situations. Always reference official documentation and you'll be fine. Say you would not do anything that even seems to be borderline unethical to you. Go by those two rules at everys scenario they throw at you.