baby daddy drama/court

I never been to court in my life well I gotta go court for stole coudty I have no clue what to expect on this court date...I'm tried asking ppls around me because I'm getting all navigate, comment n all it doing is stressing me out I have my own place, I'm a full time mother to my kids, I left my son daddy years ago, after he put us out his house I stay till I found a place to live, my son us,to go to this school, near his house I move him outta the school because so he can ride the bus n come home EVERY day for free, his father had me helping him pay for child day care to bring him to my house every day after school, I felt like my son don't need to go to that school the this year cause I got tried helping him pay to get our son home cause i didn't have a car, my son daddy already theart,me n told me if I try move him outta that school he was go take me to court n get full coudty n make me pay him child support, now I'm getting ready to go court, next month he never payed child support for our son, I just file, child support a few weeks ago..he now on child support..so..I'm still waiting on that.. & other people telking me he can get my son away from me because i dont have a car smdh...Please any good advice please