Got a new puppy and i’m not sure how to train her

hello I got a new puppy, i’m not sure what kind of puppy she is but she looks like she’s going to be big. They had told us she looks like a mastiff mix. I am also not sure how old she is but she’s definitely around the age of teething. She got fixed yesterday but since she’s been home she has been so active and this is something i’ve never seen before. I’ve only had cats and my fiancé really wanted a puppy so our son could grow up with one. I’m just not used to the high energy and I am a sahm so I have plenty of time. we want to crate train her but eveything i saw said to start the second or third day she’s in the home so she can get acclimated. I just am not sure what to do or how to stay training her or the methods of training a large dog. she’s biting and trying to chew on eveything. potty training isn’t a big deal she’s good with that but she barks demanding attention and i’ve tried to have a activity food potty and nap schedule with her but it didn’t seem to work she just wants to play all the time. my cat won’t play with her right now and my fiancée works at night. I need to be able to feed my son and have a little time to clean at least and i know it’s only been a day but i’ve just never experienced this before. So if anyone has anything they know helps with super active pups who are teething and just anti nap please lmk!