Decide what you are and aren’t prepared to do. Settle and commit to your boundaries and never let clients or anyone else, including other sex workers, influence them.
Research advice on here about how much to charge and where to work from.
Read the living shit out of this site until it hurts your eyes. Screen shot security info on to a working phone and rehearse/learn it until it becomes habit.
Almost everything you need to know is on here. It really is.
Still got questions after searching the forum, oh and reading the main site too, then ask. Enjoy! And good luck.