Golfstats is one of the premier websites that will enable you to build custom reports and dive deeply into a reservoir of information about courses and golfers. There are free resources that are less immersive on the PGA's own website, however.
One of the best things about golf is that there is no real offseason. That means you can find golf betting action no matter what time of year it is and if you're able to identify value based on your research, you stand a good chance to make some green on the greens.