Congratulations on your new puppy! I believe most of the work for the adult dog you want happens in the first 3-4 months. My advice would be:
Biting - make it very clear this is not a game. All puppies bite and she will continue to do so for a few more weeks, but, that doesn't make it ok and they can learn self control. Some different things to try are screaming OUCH! really loud when she does it, the minute her mouth goes on you, shove your hand/arm into her mouth and stay with her a moment, gagging her, a two-finger smack across the nose with a firm "NO!" and always follow up but giving her an appropriate thing to chew on.
As for the leash, she's 9 weeks and can't be more than 4 or 5 pounds - she can't "refuse". First, chewing on the leash is a no-no. I would get down on her level and encourage her forward by pulling gently until she gives a little bit, then making a little fuss over her, then doing it again. Hold the leash firm and she may set back against it, flip back and forth a bit and generally act like a little wild bronc, but the minute she puts slack in the leash, reward her. It should take about 5-10 minutes before she gets the idea. Make her do more and more each time. Even after she has the hang of it, she'll likely test it again and again but as the saying goes, "if she wants to stay with her head, she'll follow".
Start now teaching her self-control, she isn't too young to learn. Hold her firmly upside down in your arms (like a baby cradled) and do not let her go until she relaxes and quits struggling. Never turn her loose when she struggles to get down - she must submit first. Same thing when you're trying to do anything with her, from clipping her nails, to brushing her, to putting on her collar, hold her down until she stops struggling. Nothing is negotiable. Make her either sit or down and stay before she can have her meals. Let her drag a light line around the house so you can immediate correct her for no-nos (sniffing trash, admiring shoes, biting furniture, etc.) Teach her to stay now, teach her she can't run out open doors, she can't lick, she can't bark, all these things are much easier to nip in the bud in the early weeks than after it's become an established habit months down the road. Every day or two, stick your fingers in her ears, mess with her feet and nails, run the blow dryer and/or clippers over her, brush her out. And socialize and expose her to any and every thing you can think of. Everything you do, good and bad, is training the dog. The work you put in now will pay you back 10 fold a year from now.
Now, where are the pictures? That's a requirement you know!