Hi Dave,
Yep, heaps of spots to SUP up the north end of the coast. I live at Yaroomba and ocean paddle north and south from there as well as SUP surfing around Yaroomba.
Favourites though are flatwater paddling in the Noosa River and Bays as well as ocean paddling from the river mouth to Granite and back. Good spots to launch at Noosa are the Lions Park and Quamby Place. You will see fellow SUPers there at most times.
SUP surfing on the points is awesome but crowds are a major factor when it is working. I would advise against Tee Tree Bay and Granite until you are well practised.
There is only really one shop in Noosa area at the moment and that is Kitesurf Adventure Sports at Noosaville as JT has pointed out. They are great people and know their stuff.
I paddle from Noosa a lot of weekends on a white Fanatic 12'6'' usually from Quamby Place. In the surf I am on a green Fanatic 9'6". So look me up and say hello. The local Noosa SUPers are a mix of older flatwater paddlers and some younger surf chargers.
Keep in mind that the father of SUP in Australia kicked the sport off in Noosa.
Good luck and have fun.
Cheers ET.