I beat this game several times, so here goes.
To unlock other tourneys, just win Marion. It isn't that hard, you only need to go about even par, possibly 1 under.
To do the putting ranges, talk to one of the people on the putting greens. They will challenge you to a putting contest, and you must get 7\10 inside the circle, but you get 25% more exp if you get all 10. But I think you need to win the Marion Tornament to open Palm club, the Palm tourney to open Dune club, and so on.
Win the Marion Tournement and all your questions will be answered...
*My real signature went on strike, said something about "unfair working conditions". So, this is a temporary replacement sig, until I can work things out with the real sig.