It was Jason who told Maroni where to find where they were hiding, but in exchange, the Maroni Family gave Jason his own patch in Gotham City where he could commit crime without interfering with any of their business.
Jason had his first encounter with Batman when he was a witness to a fight between him and Joker at age fifteen shortly after a successful robbery.
Bruce had another entrance to the Batcave built into Jason's bedroom.
Like Dick Grayson before him, Jason assumed the role of Batman's sidekick, Robin.
Jason was strong, held onto the belief that Batman was out there looking for him, and, would soon find him.