Take lessons. Then practice. Then take more lessons.
There are very few people who have the hand-eye coordination to pick up golf without instruction. The swing and grip are very alien and there's very little hope of learning it properly out of a book. I've heard of people supposedly learning to swing the club using Ben Hogan's Golf My Way, but I think those cases are few and far between. Find a decent pro that you're comfortable with, take lessons and then set aside time to practice and play.
I remember taking lessons about 25 years ago. I got a few looks since people didn't see too many minorities in the South taking golf lessons back then. And lessons can help quite a bit. I went from shooting 110 to shooting in the mid 80s after taking lessons.