Can you tell me about the withdrawal method of birth control?

Not efffective. The withdrawl method is when the male pulls his penis out of the vagina before ejaculation occurs. This is a very poor method of birth control. Even prior to ejaculation, the penis releases small amounts of fluid that contain sperm.
Better than nothing. Withdrawal is a method of birth control in which the man "pulls out" his penis from the vagina before he comes or ejaculates. The failure rate of withdrawal for pregnancy prevention is 24% in the first year if use. If used perfectly, the failure rate is 4%.