So I got a Beagle mix puppy from the shelter a few weeks ago. I have been house training her and so far she's doing pretty well. No one is quite sure how old she is, but she is still teething and I've noticed more teeth now than when we first got her, so I'm assuming she's still pretty young. Anyways, I'd like to teach her the basic Sit, Roll Over, Jump..etc kind of things. Where do I begin?