A: Courts will always consider what's in the best interest of the child in an adoption. But generally, if your sister is over 18 years old, emotionally and financially able to care for your son, and has no criminal or child abuse history, she will be eligible to petition to adopt. If your son is at least 12 years old, he will need to consent to the adoption. Whether or not the adoption is a success will also depend on the relationships between the parties, specifically your sister and your son. You would need to voluntarily terminate your parental rights and your sister would need to file a report of intent to adopt. You should talk with an attorney about the facts specific to your case before you begin the process.
A: It depends on whether the adoption is public or private and the relationship of the adopting parent to the child. Every adoption is different. You should contact an attorney with adoption experience to figure out what the first step would be in your particular situation.