Even though I am a firm believer that learning the mental game and practicing in the right way is the key to reaching the golf of your potential, you will not be able to achieve this if you don’t have strong fundamentals. Without a good grip, alignment, posture, ball position and balance, you will find it hard to improve.
Learning the fundamentals of golf is the first step of becoming a better player. Even the very best golfers in the world continually work on this. Once you know these are right, the game is about visualization and feel. The Golf State of Mind CD is a great way to learn this.
Here is a video of Jack Nicklaus explaining the fundamentals of golf.