Congrats on your new baby! Bringing a puppy home is both exciting and can be stressful at first. When we first brought Reesie home I had to keep telling myself, "He is just a baby." That helped out tons. My husband would always say that he was like a baby running abound the house without a diaper. LOL! Whenever you have her out of her crate/expen keep her on a leash attached to you. This way she will not sneek off to poop or pee somewhere. Expect her to make mistakes, because she will.
When she does, just clean them up and move on. If you catch her in the act, clap your hands or say "AH-AH" in a loud voice and take her to the right place. Like others have said, take her out every half hour or hour depending on how old she is. The younger they are the more times you take them to their pee/poop place. Also, take her potty
after she eats, after she plays, and after she gets up from sleeping. Yes, you will feel like all you do is take her potty, but the more times she goes in the right place the quicker she will learn where to go. Consistency is the key. Enjoy her. The puppy days go by too fast, and then they are gone. Hope this helps, and cangrats!