Welcome to AFF
I don't have the answers to all of your questions, but here goes:
It is free to join QFF through the Woolworths Everday Rewards Card.
Leaflets in store. Earn one QFF point per dollar over $30 spent.
Can also tie this to a Woolworths Everyday Rewards Credit Card
1 FF Point per $1.
The sweet spot with Credit cards seems to be an Amex with a sign on bonus and earn 1.5 FF points per $1 and a back up Visa or MC with 1:1 conversion ( like Woolies).
You may consider buying AA miles to top up your account as there's a bonus deal on up until the end of Feb with up to 15,000 bonus miles.
I'm pretty clueless about AA Awards though.