Congrats on learning! I've heard it's much harder to learn as an adult, hopefully you're feeling very proud!
If you can go straight, a local Multi Use Path (MUP) that most parks have would be a great start. This is the tactic I'm using with my son. Once he learned to to brake effectively and had reasonable bike control from riding in a large empty parking lot, that's the next best place to learn. Riding in traffic would be a nightmare at this point. Find a bike path and go when most people are working so it's nice and empty.