Advice with restraining order

TLDR: are there any steps I should take before filing for a restraining order? Filing evidence, talking to an officer etc. Or is it just a "make the report and wait for court" type of deal?

To cut a long story short, I'm probably going to have to file a restraining order against my father or family, due to him threatening my safety wirh physical violence, and threatening to "find me wherever I, or my boyfriend goes" after telling them that I'm done and leaving the house (I'm over 18 so no extra complications there).

Me moving out has always been a hot topic with my family that has lead to arguments and them threatening to disown me if I do (I really should have taken that offer lol), so I'm convinced that after I move in with my boyfriend (who they disapprove of) there is going to be trouble and I want to be prepared for the worst.