You're o.k. to start - no credits needed.
Press PLAY NOW and look around - it won't bite. There are tutorial videos.
If you are a golfer, try stroke play at St.Andrews.
If not, Closest to the Hole is an easy start.
There's a good FAQ over there =>
(though it don't show how to start a game)
Come back to ask but keep in mind that you may be on moderation - delayed publishing.