Your private pilot certificate lets you fly and rent aircraft in the national air system without any restrictions.
You will need your FAA medical before you can solo the ACFT. I recommend getting your medical before you start your training. Here is the FAA Medical Website to help get your medical. I recommend finding an Airmen Medical Examiner (AME), then only scheduling a "Yearly Checkup" with them. Take in your medicine list and brief medical history and have them go over it. If needed, they will recommend having your primary care provider adjust or change your medicine to what is accepted by the FAA. Then you will need to schedule an FAA medical exam. It is another exam but if you need to adjust or switch medicine, it's well worth it.
Log at least 40 hrs of flight to include 20 hrs of instruction and 10 hrs of solo.
After you have found where you will start your training. Here are some helpful tips.
Apps I like:
You will have a written test that you need to score 70% or better on. It's 60 questions with 3 options and have 2.5 hours to complete. The test itself is $175 and more than likely the testing center will have its own usage charge for proctoring. You will need to be signed off by either your instructor or complete an online ground school and get a completion certificate to take the test. To sign up for the test you need to make an account with PSI Testing and schedule the test a few days out.
Here is a list of online practice test websites:
On the test day, you will do an Oral exam where the Designated Pilot Examiner (DPE) will ask you questions to check your knowledge. Then you will go out and do the practical test and fly with the DPE.