Below are some links to rules tutorials and discussions courtesy of the United States Golf Association.
General Rules and Etiquette
Starting Time
Undue Delay
Order of Play
Practice
The Ball
Abnormal Ground Conditions
Taking Relief
Lost Ball or Ball Out of Bounds
Unplayable Ball
Ball Unfit for Play
Hazards
Definition of a Hazard
Ball in Hazard
Water Hazard
Lateral Water Hazard
Obstructions
Movable Obstructions
Immovable Obstructions
Equipment
14 Club Limit
Terms
Through the Green
Loose Impediments
Environmentally Sensitive Areas
Scoring
Stroke Play
Match Play
Putting
Putting Green Etiquette
Line of Putt
Ball Over-hanging the Hole
Attending and Unauthorized Attendance of the Flag Stick
Ball Striking Flagstick or Attendant/Ball Resting Against Flag Stick
Marking, Lifting, and Replacing the Ball
On the Tee
The Teeing Ground
Playing from Outside the Teeing Ground