Play and complete the World Tour. When you power up, put your points mostly into "Power", Power Boost", and "Putting". After that, complete the scenarios. Power up as desired. Gold medals bring in $75,000 to $100,000. Silver medals bring in $50,000 to $75,000. Bronze medals bring in $35,000 to $37,500. If you complete the above, "Tournaments", "Real-Time Events", and the other options for game play become easy.