New to FB. Need suggestions for the FB 30.

I want to purchase a program to start my new journey with FB.

I am gearing towards the FB 30 program. After browsing the list of programs I see that there are 4 different rounds of these programs.

Is it best to start with Round 1 and work my way to Round 4? Or does it matter which one I start with?

I also noticed a price difference between 1-3 and 4. Not sure if that makes a difference either.

Thank you :)