First of all, no matter what you do you are not going to physically turn into an animal, so just drop that idea right now.
But, Shape-shifting is a reality though. It is done through creative visualisation so that you may carry the power and abilities of an animal with you when you need it. Drawing the courage of a lion in the face of adversity is an example where you can draw on the power of an animal spirit in such a way.
Shape-shifting is also a way of getting to know an animal better (the old walk a mile in their shoes bit or perhaps in this case it should be paws....) Finally shape-shifting allows you to take on animal form while on shamanic journeys or while you visit the astral plane.
To learn to shape-shift you should be in a place where you can meditate, but where there is enough room to move around. You should be dressed comfortably (or undressed comfortably, if that is your preference) so that you may move freely. Relax, close your eyes, call and greet the animal spirit you wish to shape-shift to. Let yourself become that animal in posture, stance, movement and sound. How does this animal see, hear, taste, touch, smell? What is it experiencing? Move as it would move. Become it with all the abandon of a small child. Experience it as long as you wish. When you choose thank the animal spirit that has helped guide you in learning its ways and then return to your human body...read more>>>...