Hi, welcome to the forum!
Thank you for adopting! New Name dog is lucky to have you!
Take it easy and slow, allow her to get to know you, and you her. You don't know anything about her, so be very vigilant in all situations until you are satisfied that she is a safe and reliable dog. Keep her on leash, stick to a routine, supervise all interactions with people, dogs and other animals very carefully.
Keep her home for a couple of weeks, let her settle in and get to know her new routine before you throw new places and experiences at her. New dogs often go through a "Honeymoon" period. Often in the first couple of weeks or so, they are very, very, very good as they just hang back and observe their surroundings, try to not rock the boat and try hard to please as they figure out the pack dynamics and their place in it. Once they feel comfortable and a sense of belonging, their personality comes out, and they may start testing their boundries and sometimes getting into trouble - so just be aware of this.
Set a routine, keep her leashed at all times until you know her better, avoid dog parks (tons of dog park horror stories, avoid especially with a new dog that you don't know that well), crate her, or get her crate trained if she is not already, find out if she is spayed and get her spayed asap if needed, and do plan on classes. As mentioned, a great way to bond and have fun together.
Post pictures and keep us updated!