As Chris mentioned, an introductory (admissions) flight should be your first step. You could do one at any local airport that has a flight school or ATP, I would recommend taking a few if you have the opportunity. You want to find the best school for you that you feel would value you and provide you the resources and product you need to be successful.
Chris made a really great posting a while ago which helps asks the questions you should when given a tour of a training facility:
If you have a date when you would want to start flight training, written exams are good for 24 months (2 years) after date of results. I’ve seen and recommended students to study for the PAR (Private) written within enrollment which would be plentiful time to accomplish at least the PAR. If time remained, you could then work on the other writtens thereafter.