To lookup a GHIN Handicap Index, please click here.
You'll need to login to your GHIN account by entering your GHIN number and last name. From there, click the "Golfer Lookup" tab and using the search function under "All Golfers", or you can specify to "My Club". The app allows you to follow your friends and easily access their information under the "Following" tab.
You may also lookup other golfers via the GHIN Mobile App.