Facebook marketing -- 2

I am putting together a number of remote teacher training classes for 2022. I have created some events on Facebook and would like help with the following: (1) setting up the pixels with my website correctly (2) fixing the events - I keep getting an error message about a call to action button (3) marketing the events so that I get teachers to sign up for the classes. Is this something that you can do? This would be a long-term project if successful.