Process of Applying to Taking the CPA

So I am planning on taking the CPA exam as a candidate for Georgia and am going to be taking my exams in Texas. I have been trying to contact the states to set up my exams but wanted some advice on the best way to go about signing up for the exams and planning my studying. Is the process most commonly to sign up for the exams through the state, then to choose which course I am going to take? If I have not submitted my NTS but have already been pre-screened and approved is it worth it for me to sign up for Becker? If someone could just run me through the process from submitting your NTS to taking the exams that would be great.