Potty training for a 4 month old puppy

Just adopted this absolute bebesito of a Basset Hound puppy! We named her Penny Lane (like Penny Lane by The Beatles)! We adopted her from a cousin whose husband didn’t want a dog in the house. We’ve had her for about a day, so far.

This is the first time I have ever trained a puppy and I am wondering if anybody has some pointers or advice. She already follows me around everywhere and is pretty energetic. We bought her the basics: dry food (for now), treats, toys/chew toys (she’s currently teething too), ear and eye wipes, and toothbrush & paste, going to buy a bigger bed too.

She doesn’t go potty outside when we walk her and instead goes on the training pads (or whatever they’re called lol). It seems like the previous owner gave her some training as she understands sit and doesn’t pull on the leash (too much) during walks.