Becoming a lawyer means that you will spend four years in college, and then another three years in law school, assuming you go full-time. Then you need to take the Bar exam for the state in which you will be working.
No, you won't be working with couples. Since the couple is getting divorced, each person gets his/her own lawyer to work with him/her, and they basically fight against each other, much of the time. It is your job to represent your client against his/her former spouse and to get as much for him or her as possible. The same is true of the lawyer working for the other side. So you will be working for (and with) your client, and will also meet with the lawyer for the other spouse, since that person has representation and cannot be approached directly.
You will not be the judge (unless you are eventually appointed to the bench as a family court judge). You and the other lawyer will take adversarial positions, and there will be a judge who will decide after hearing both of your positions.
You will usually NOT talk to the kids. Child custody will be one of the issues which will need to be decided, but that decision is usually made by the judge. As far as what is in the best interests of the children, you wouldn't be considered a fair judge of that, so while you will usually make recommendations as to what your client wants, those things are determined by testimony from third parties (child protective services, therapists, etc.) and decided by the judge.
